Question

Решите пример с дробями и разными знаменателями.40 баллов

Answer 1

$1) 0.8*2frac{1}{3} = frac{8}{10} cdot frac{7}{3} = frac{56}{30} \ \ 2) 2.7 - frac{56}{30} = frac{81}{30} - frac{56}{30} = frac{25}{30} \ \ 3) 5.2 - 1.4 = 3.8 \ \ 4) 3.8 : frac{3}{7} = frac{38}{10} cdot frac{7}{3} = frac{266}{30} \ \ 5) frac{25}{30} : frac{266}{30} = frac{25}{30} cdot frac{30}{266} = frac{25}{266} \ \ 6) frac{25}{266} : 2frac{1}{2} = frac{25}{266} cdot frac{2}{5} = frac{5}{133}$
$\ \7) 0.125 : 2frac{1}{2} = frac{125}{1000} cdot frac{2}{5} = frac{5}{100} \ \ 8) frac{5}{100} + frac{5}{133} + 0.43 = frac{48}{100} + frac{5}{133} = frac{1721}{3325}$

Answer 2

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