ГДЗ Математика 6 клас Істер — Вправа 455

1) $0,9 : \frac{3}{4} = \frac{9}{10} \cdot \frac{4}{3} = \frac{3 \cdot 2}{5 \cdot 1} = \frac{6}{5} = 1\frac{1}{5} = 1,2;$

2) $0,24 : \frac{4}{9} = \frac{24}{100} \cdot \frac{9}{4} = \frac{6}{25} \cdot \frac{9}{4} = \frac{3 \cdot 9}{25 \cdot 2} = \frac{27}{50} = 0,54;$

3) $3\frac{1}{3} : 1,25 = \frac{10}{3} : \frac{125}{100} = \frac{10}{3} \cdot \frac{4}{5} = \frac{2 \cdot 4}{3} = \frac{8}{3} = 2\frac{2}{3};$

4) $4,25 : 1\frac{1}{2} = \frac{425}{100} : \frac{3}{2} = \frac{17}{4} \cdot \frac{2}{3} = \frac{17 \cdot 1}{2 \cdot 3} = \frac{17}{6} = 2\frac{5}{6}.$