ГДЗ Математика 6 клас Істер — Вправа 354

1) $\frac{3}{5} \cdot 1\frac{5}{6} = \frac{3}{5} \cdot \frac{11}{6} = \frac{1 \cdot 11}{5 \cdot 2} = \frac{11}{10} = 1\frac{1}{10};$

2) $2\frac{2}{5} \cdot \frac{5}{24} = \frac{12}{5} \cdot \frac{5}{24} = \frac{1 \cdot 1}{1 \cdot 2} = \frac{1}{2};$

3) $\frac{3}{8} \cdot 4\frac{4}{15} = \frac{3}{8} \cdot \frac{64}{15} = \frac{1 \cdot 8}{1 \cdot 5} = \frac{8}{5} = 1\frac{3}{5};$

4) $4\frac{1}{3} \cdot \frac{3}{10} = \frac{13}{3} \cdot \frac{3}{10} = \frac{13}{10} = 1\frac{3}{10};$

5) $2\frac{1}{6} \cdot 3 = \frac{13}{6} \cdot 3 = \frac{13}{2} = 6\frac{1}{2};$

6) $2\frac{4}{15} \cdot 5 = \frac{34}{15} \cdot 5 = \frac{34}{3} = 11\frac{1}{3};$

7) $1\frac{5}{21} \cdot 42 = \frac{26}{21} \cdot 42 = 26 \cdot 2 = 52;$

8) $16 \cdot 1\frac{3}{40} = 16 \cdot \frac{43}{40} = \frac{2 \cdot 43}{5} = \frac{86}{5} = 17\frac{1}{5}.$