Задание № 4: 1) 4 1/6 * 3/5; 2) 7/8 * 2 2/7; 3) 2/13 * 8 9/20; 4) 2 2/5 * 5/8; 5) 4/25 * 2 5/16; 6) 6 3/10 * 5/6; 7) 3 6/25 * 5/27; 8) 8/15 * 3 3/4

**Ответ:** 1) $4 \frac{1}{6} \cdot \frac{3}{5} = \frac{25}{6} \cdot \frac{3}{5} = \frac{25 \cdot 3}{6 \cdot 5} = \frac{5 \cdot 1}{2 \cdot 1} = \frac{5}{2} = 2 \frac{1}{2}$ 2) $\frac{7}{8} \cdot 2 \frac{2}{7} = \frac{7}{8} \cdot \frac{16}{7} = \frac{7 \cdot 16}{8 \cdot 7} = \frac{1 \cdot 2}{1 \cdot 1} = 2$ 3) $\frac{2}{13} \cdot 8 \frac{9}{20} = \frac{2}{13} \cdot \frac{169}{20} = \frac{2 \cdot 169}{13 \cdot 20} = \frac{1 \cdot 13}{1 \cdot 10} = \frac{13}{10} = 1 \frac{3}{10}$ 4) $2 \frac{2}{5} \cdot \frac{5}{8} = \frac{12}{5} \cdot \frac{5}{8} = \frac{12 \cdot 5}{5 \cdot 8} = \frac{3 \cdot 1}{1 \cdot 2} = \frac{3}{2} = 1 \frac{1}{2}$ 5) $\frac{4}{25} \cdot 2 \frac{5}{16} = \frac{4}{25} \cdot \frac{37}{16} = \frac{4 \cdot 37}{25 \cdot 16} = \frac{1 \cdot 37}{25 \cdot 4} = \frac{37}{100} = 0,37$ 6) $6 \frac{3}{10} \cdot \frac{5}{6} = \frac{63}{10} \cdot \frac{5}{6} = \frac{63 \cdot 5}{10 \cdot 6} = \frac{21 \cdot 1}{2 \cdot 2} = \frac{21}{4} = 5 \frac{1}{4}$ 7) $3 \frac{6}{25} \cdot \frac{5}{27} = \frac{81}{25} \cdot \frac{5}{27} = \frac{81 \cdot 5}{25 \cdot 27} = \frac{3 \cdot 1}{5 \cdot 1} = \frac{3}{5}$ 8) $\frac{8}{15} \cdot 3 \frac{3}{4} = \frac{8}{15} \cdot \frac{15}{4} = \frac{8 \cdot 15}{15 \cdot 4} = \frac{2 \cdot 1}{1 \cdot 1} = 2$