{"id":2061,"date":"2026-04-03T06:05:46","date_gmt":"2026-04-03T06:05:46","guid":{"rendered":"https:\/\/rumahpintar.co.id\/blog\/?p=2061"},"modified":"2026-04-08T07:25:17","modified_gmt":"2026-04-08T07:25:17","slug":"soal-operasi-aritmatika-pada-bilangan-real","status":"publish","type":"post","link":"https:\/\/rumahpintar.co.id\/blog\/soal-operasi-aritmatika-pada-bilangan-real\/","title":{"rendered":"15 Contoh Soal Operasi Aritmatika pada Bilangan Real, Lengkap dengan Pembahasannya untuk TKA Matematika SMP"},"content":{"rendered":"<p class=\"ds-markdown-paragraph\"><strong><a href=\"http:\/\/rumahpintar.co.id\">Bimbel Rumah Pintar<\/a> &#8211; <\/strong>Soal operasi aritmatika pada bilangan real merupakan fondasi utama dalam matematika yang harus dikuasai agar lulus TKA SMP. Perlu diketahui, konsep operasi aritmatika ini memiliki prinsip dasar yang harus dipegang teguh, yakni urutan operasi hitung (KABATAKU) : Kurung, Akar\/Pangkat, Kali\/Bagi, Tambah\/Kurang.<\/p>\n<p class=\"ds-markdown-paragraph\">Selain itu, pemahaman tentang sifat-sifat bilangan real (komutatif, asosiatif, distributif), operasi bilangan negatif, pecahan, desimal, persen, serta kemampuan mengubah bentuk bilangan (konversi) menjadi kunci keberhasilan. Kesalahan paling umum terjadi karena mengabaikan urutan operasi atau keliru dalam operasi bilangan negatif dan pecahan.<\/p>\n<p class=\"ds-markdown-paragraph\">Mengapa latihan soal sangat penting?\u00a0Soal TKA Matematika SMP sering menyajikan bilangan real dalam bentuk soal cerita (diskon, suhu, untung-rugi, KPK\/FPB) yang menguji ketelitian dan kecepatan.<\/p>\n<p class=\"ds-markdown-paragraph\">Dengan rutin mengerjakan variasi soal, Sahabat Rumah Pintar akan terbiasa mengenali pola soal, menghindari jebakan, dan menghemat waktu saat ujian. Penguasaan topik ini menjadi penentu kelulusan karena hampir setiap soal TKA mengandung komponen operasi bilangan real, baik secara eksplisit maupun tersembunyi dalam masalah geometri atau statistika.<\/p>\n<hr \/>\n<h2>15 Contoh Soal dan Pembahasan Operasi Aritmetika Bilangan Real<\/h2>\n<h3>Soal 1<\/h3>\n<p class=\"ds-markdown-paragraph\">Hasil dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">12+8\u00d7(\u22123)\u221215\u00f75<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">12<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">3<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">15<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">5<\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nIkuti urutan operasi: kali dan bagi didahulukan.<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">8\u00d7(\u22123)=\u221224<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">3<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">24<\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">15\u00f75=3<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">15<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">5<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><\/span><\/span><\/span><br \/>\nSoal menjadi:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">12+(\u221224)\u22123=12\u221224\u22123=\u221215<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">12<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">24<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">12<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">24<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">15<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: -15<\/strong><\/p>\n<hr \/>\n<h3>Soal 2<\/h3>\n<p class=\"ds-markdown-paragraph\">Hasil dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">34+25\u221212<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nSamakan penyebut = 20<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">34=1520,25=820,12=1020<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">15<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">8<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">10<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">1520+820\u22121020=1320<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">15<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">8<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">10<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">13<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">1320<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">20<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">13<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/strong><\/p>\n<hr \/>\n<h3>Soal 3<\/h3>\n<p class=\"ds-markdown-paragraph\">Sebuah toko memberikan diskon 30% + 20% untuk sebuah baju. Jika harga baju Rp250.000, berapa yang harus dibayar?<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nDiskon bertingkat tidak dijumlah langsung (30%+20%\u226050%)<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Diskon pertama:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">30%\u00d7250.000=75.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">30%<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">250.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">75.000<\/span><\/span><\/span><\/span>\u00a0\u2192 harga = 175.000<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Diskon kedua:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">20%\u00d7175.000=35.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">20%<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">175.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">35.000<\/span><\/span><\/span><\/span>\u00a0\u2192 harga akhir = 175.000 &#8211; 35.000 = 140.000<\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: Rp140.000<\/strong><\/p>\n<hr \/>\n<h3>Soal 4<\/h3>\n<p class=\"ds-markdown-paragraph\">Suhu di dalam freezer adalah -8\u00b0C. Kemudian suhu diturunkan 5\u00b0C. Berapa suhu akhir?<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nDiturunkan artinya dikurangi.<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">\u22128\u22125=\u221213<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">8<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">5<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">13<\/span><\/span><\/span><\/span>\u00b0C<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: -13\u00b0C<\/strong><\/p>\n<hr \/>\n<h3>Soal 5<\/h3>\n<p class=\"ds-markdown-paragraph\">Hasil dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">(\u22124)\u00d76+(\u221212)\u00f73<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">4<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">6<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">12<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nKali dan bagi didahulukan:<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">(\u22124)\u00d76=\u221224<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">4<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">6<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">24<\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">(\u221212)\u00f73=\u22124<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">12<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">4<\/span><\/span><\/span><\/span><br \/>\nJadi:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">\u221224+(\u22124)=\u221228<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">24<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">4<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">28<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: -28<\/strong><\/p>\n<hr \/>\n<h3>Soal 6<\/h3>\n<p class=\"ds-markdown-paragraph\">Seorang pedagang membeli 8 kg jeruk seharga Rp120.000. Ia menjual dengan keuntungan 25% per kg. Berapa harga jual per kg?<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nHarga beli per kg =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">120.000\u00f78=15.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">120.000<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">15.000<\/span><\/span><\/span><\/span><br \/>\nKeuntungan 25% dari 15.000 =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">0,25\u00d715.000=3.750<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">25<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">15.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">3.750<\/span><\/span><\/span><\/span><br \/>\nHarga jual per kg =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">15.000+3.750=18.750<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">15.000<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\">3.750<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">18.750<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: Rp18.750<\/strong><\/p>\n<hr \/>\n<h3>Soal 7<\/h3>\n<p class=\"ds-markdown-paragraph\">Bentuk desimal dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">78<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">8<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">7\u00f78=0,875<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">7<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">875<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: 0,875<\/strong><\/p>\n<hr \/>\n<h3>Soal 8<\/h3>\n<p class=\"ds-markdown-paragraph\">Ibu membeli\u00a0<span class=\"katex\"><span class=\"katex-mathml\">212<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0kg tepung. Digunakan untuk membuat kue\u00a0<span class=\"katex\"><span class=\"katex-mathml\">134<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0kg. Sisa tepung adalah &#8230; kg.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nUbah ke pecahan biasa:<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">212=52=104<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">10<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">134=74<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\nSisa =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">104\u221274=34<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">10<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0kg<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">34<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0kg<\/strong><\/p>\n<hr \/>\n<h3>Soal 9<\/h3>\n<p class=\"ds-markdown-paragraph\">Hasil dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">0,25\u00d70,4\u00f70,5<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">25<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">4<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">5<\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nUbah ke pecahan biasa atau hitung langsung:<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">0,25\u00d70,4=0,10<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">25<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">4<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">10<\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">0,10\u00f70,5=0,2<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">10<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">5<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: 0,2<\/strong><\/p>\n<hr \/>\n<h3>Soal 10<\/h3>\n<p class=\"ds-markdown-paragraph\">Lampu A menyala setiap 8 detik, lampu B setiap 12 detik. Jika keduanya menyala bersama pada detik ke-0, pada detik ke berapa mereka menyala bersama lagi?<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nCari KPK dari 8 dan 12.<br \/>\nFaktorisasi:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">8=23,12=22\u00d73<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">2<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">12<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">2<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><\/span><\/span><\/span><br \/>\nKPK =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">23\u00d73=24<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">24<\/span><\/span><\/span><\/span>\u00a0detik<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: 24 detik<\/strong><\/p>\n<hr \/>\n<h3>Soal 11<\/h3>\n<p class=\"ds-markdown-paragraph\">Hasil dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">5\u22123\u00d7(\u22122)+8\u00f7(\u22124)<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">5<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">2<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">4<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nOperasi kali\/bagi lebih dulu:<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">3\u00d7(\u22122)=\u22126<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">2<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">6<\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">8\u00f7(\u22124)=\u22122<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">8<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">4<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">\u2212<\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span><br \/>\nSoal:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">5\u2212(\u22126)+(\u22122)=5+6\u22122=9<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">5<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">6<\/span><span class=\"mclose\">)<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">2<\/span><span class=\"mclose\">)<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">5<\/span><span class=\"mbin\">+<\/span><\/span><span class=\"base\"><span class=\"mord\">6<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\">2<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">9<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: 9<\/strong><\/p>\n<hr \/>\n<h3>Soal 12<\/h3>\n<p class=\"ds-markdown-paragraph\">Rudi menabung Rp2.500.000 dengan bunga 12% per tahun. Berapa besar bunga setelah 8 bulan?<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nBunga 1 tahun =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">12%\u00d72.500.000=300.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">12%<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">2.500.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">300.000<\/span><\/span><\/span><\/span><br \/>\nBunga 8 bulan =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">812\u00d7300.000=200.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">12<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">8<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">300.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">200.000<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: Rp200.000<\/strong><\/p>\n<hr \/>\n<h3>Soal 13<\/h3>\n<p class=\"ds-markdown-paragraph\">Hasil dari\u00a0<span class=\"katex\"><span class=\"katex-mathml\">214\u00d7113\u00f735<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0adalah &#8230;<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nUbah ke pecahan biasa:<br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">214=94,113=43<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">2<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">9<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">94\u00d743=3612=3<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">9<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">4<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">12<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">36<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">3\u00f735=3\u00d753=5<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mbin\">\u00f7<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">5<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: 5<\/strong><\/p>\n<hr \/>\n<h3>Soal 14<\/h3>\n<p class=\"ds-markdown-paragraph\">Dalam suatu kelas,\u00a0<span class=\"katex\"><span class=\"katex-mathml\">35<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0siswa adalah perempuan. Jika jumlah siswa laki-laki 12 orang, berapa total siswa?<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nJika perempuan\u00a0<span class=\"katex\"><span class=\"katex-mathml\">35<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>, maka laki-laki =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">1\u221235=25<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">3<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n<span class=\"katex\"><span class=\"katex-mathml\">25\u00d7total=12<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord text\"><span class=\"mord\">total<\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">12<\/span><\/span><\/span><\/span>\u00a0\u2192 total =\u00a0<span class=\"katex\"><span class=\"katex-mathml\">12\u00d752=30<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">12<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">30<\/span><\/span><\/span><\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: 30 orang<\/strong><\/p>\n<hr \/>\n<h3>Soal 15<\/h3>\n<p class=\"ds-markdown-paragraph\">Manakah yang lebih besar: diskon 25% atau diskon 10% + 15%? Buktikan dengan harga barang Rp200.000.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Pembahasan:<\/strong><br \/>\nDiskon 25%:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">25%\u00d7200.000=50.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">25%<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">200.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">50.000<\/span><\/span><\/span><\/span>\u00a0\u2192 bayar 150.000<br \/>\nDiskon 10%+15%:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Diskon 10%: 20.000 \u2192 harga = 180.000<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Diskon 15%:\u00a0<span class=\"katex\"><span class=\"katex-mathml\">0,15\u00d7180.000=27.000<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mord\">15<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\">180.000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">27.000<\/span><\/span><\/span><\/span>\u00a0\u2192 bayar = 153.000<br \/>\nDiskon 25% lebih besar (bayar lebih kecil: 150.000 &lt; 153.000)<\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><strong>Jawaban: Diskon 25% lebih besar<\/strong><\/p>\n<hr \/>\n<p class=\"ds-markdown-paragraph\">Selamat berlatih, Sahabat Rumah Pintar! Semoga 15 soal ini membantumu semakin percaya diri menghadapi TKA Matematika SMP. Terus asah kemampuanmu dengan variasi soal lainnya.\u00a0<strong>Tetap pintar, tetap santai!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bimbel Rumah Pintar &#8211; Soal operasi aritmatika pada bilangan real merupakan fondasi utama dalam matematika yang harus dikuasai agar lulus TKA SMP. Perlu diketahui, konsep operasi aritmatika ini memiliki prinsip dasar yang harus dipegang teguh, yakni urutan operasi hitung (KABATAKU) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2065,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4],"tags":[205,208,206,207],"class_list":["post-2061","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bahas-soal","tag-bilangan-real","tag-soal-aritmatika","tag-soal-tka-smp","tag-tka-matematika-smp"],"_links":{"self":[{"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/posts\/2061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/comments?post=2061"}],"version-history":[{"count":1,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/posts\/2061\/revisions"}],"predecessor-version":[{"id":2066,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/posts\/2061\/revisions\/2066"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/media\/2065"}],"wp:attachment":[{"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/media?parent=2061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/categories?post=2061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rumahpintar.co.id\/blog\/wp-json\/wp\/v2\/tags?post=2061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}