Campuran pecahan dan desimal

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1. 2/8×4/5÷0,75=
2. 0,7÷2/5+1/2=
2. 5/6+3/4÷0,25=

Pelajaran kelas 6 sd​

Campuran pecahan dan desimal

Jawaban:

1) 4/15

2) 2 1/4

3) 3 5/6

Penjelasan dengan langkah-langkah:

1) frac{2}{8} times frac{4}{5} div 0.75 \ \ = frac{2}{8} times frac{4}{5} div frac{75}{100} \ \ = frac{2}{8} times frac{4}{5} times frac{100}{75} \ \ = frac{2}{8} times frac{400}{375} \ \ = frac{1}{4} times frac{16}{15} \ \ = frac{16}{60} = frac{4}{15}

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2)0.7 div frac{2}{5} + frac{1}{2} \ \ = frac{7}{10} div frac{2}{5} + frac{1}{2} \ \ = frac{7}{10} times frac{5}{2} + frac{1}{2} \ \ = frac{35}{20} + frac{1}{2} \ \ = frac{7}{4} + frac{1}{2} \ \ = frac{7}{4} + frac{2}{4} \ \ = frac{9}{4} = 2 frac{1}{4}

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3) frac{5}{6} + frac{3}{4} div 0.25 \ \ = frac{5}{6} + frac{3}{4} div frac{25}{100} \ \ = frac{5}{6} + frac{3}{4} times frac{100}{25} \ \ = frac{5}{6} + frac{300}{100} \ \ = frac{5}{6} + frac{3}{1} \ \ = frac{5}{6} + frac{18}{6} \ \ = frac{23}{6} = 3 frac{5}{6}

no 1

= frac{2}{8} times frac{4}{5} times frac{4}{3} \ \ = frac{32}{120} \ \ = frac{4}{15}

no 2

= frac{7}{10} times frac{5}{2} + frac{1}{2} \ \ = frac{35}{20} + frac{1}{2} \ \ = frac{9}{4}

no 3

= frac{5}{6} + frac{3}{4} times frac{4}{1} \ \ = frac{5}{6} + frac{12}{4} \ \ = frac{23}{6}