Найдите значение выражения. 1. Найдите значение выражения. Образец: 2/3 * 5/6 = ...

**Задание 1.** а) $\frac{4}{5} \cdot \frac{4}{9} = \frac{4 \cdot 4}{5 \cdot 9} = \frac{16}{45}$ б) $\frac{6}{11} \cdot \frac{6}{5} = \frac{6 \cdot 6}{11 \cdot 5} = \frac{36}{55}$ в) $\frac{1}{10} \cdot \frac{1}{100} = \frac{1 \cdot 1}{10 \cdot 100} = \frac{1}{1000}$ г) $\frac{1}{3} \cdot \frac{2}{5} = \frac{1 \cdot 2}{3 \cdot 5} = \frac{2}{15}$ д) $\frac{3}{10} \cdot \frac{3}{10} = \frac{3 \cdot 3}{10 \cdot 10} = \frac{9}{100}$ е) $\frac{3}{5} \cdot \frac{2}{3} = \frac{\cancel{3} \cdot 2}{5 \cdot \cancel{3}} = \frac{2}{5}$ ж) $\frac{9}{7} \cdot \frac{2}{3} = \frac{\cancel{9}^3 \cdot 2}{7 \cdot \cancel{3}_1} = \frac{6}{7}$ з) $\frac{3 \cdot 5}{10 \cdot 6} = \frac{\cancel{3}^1 \cdot \cancel{5}^1}{\cancel{10}_2 \cdot \cancel{6}_2} = \frac{1}{4}$ и) $\frac{1}{2} \cdot \frac{7}{12} = \frac{1 \cdot 7}{2 \cdot 12} = \frac{7}{24}$ к) $\frac{4}{7} \cdot \frac{8}{9} = \frac{4 \cdot 8}{7 \cdot 9} = \frac{32}{63}$ л) $\frac{2}{5} \cdot \frac{3}{7} = \frac{2 \cdot 3}{5 \cdot 7} = \frac{6}{35}$ м) $\frac{1}{12} \cdot \frac{3}{8} = \frac{1 \cdot \cancel{3}^1}{\cancel{12}_4 \cdot 8} = \frac{1}{32}$ **Задание 2.** а) $\frac{5}{18} \cdot \frac{1}{2} = \frac{5 \cdot 1}{18 \cdot 2} = \frac{5}{36}$ б) $\frac{21}{25} \cdot \frac{15}{18} = \frac{\cancel{21}^7 \cdot \cancel{15}^3}{\cancel{25}_5 \cdot \cancel{18}_6} = \frac{7 \cdot \cancel{3}^1}{5 \cdot \cancel{6}_2} = \frac{7}{10}$ в) $\frac{38}{5} \cdot \frac{10}{9} = \frac{38 \cdot \cancel{10}^2}{\cancel{5}_1 \cdot 9} = \frac{76}{9} = 8\frac{4}{9}$ г) $\frac{25}{36} \cdot \frac{27}{50} = \frac{\cancel{25}^1 \cdot \cancel{27}^3}{\cancel{36}_4 \cdot \cancel{50}_2} = \frac{3}{8}$ д) $\frac{3}{10} \cdot \frac{25}{27} = \frac{\cancel{3}^1 \cdot \cancel{25}^5}{\cancel{10}_2 \cdot \cancel{27}_9} = \frac{5}{18}$ ж) $\frac{14}{25} \cdot \frac{15}{21} = \frac{\cancel{14}^2 \cdot \cancel{15}^3}{\cancel{25}_5 \cdot \cancel{21}_3} = \frac{2 \cdot \cancel{3}^1}{5 \cdot \cancel{3}_1} = \frac{2}{5}$ з) $\frac{13}{102} \cdot \frac{17}{78} = \frac{\cancel{13}^1 \cdot \cancel{17}^1}{\cancel{102}_6 \cdot \cancel{78}_6} = \frac{1}{36}$ и) $\frac{19}{450} \cdot \frac{150}{114} = \frac{\cancel{19}^1 \cdot \cancel{150}^1}{\cancel{450}_3 \cdot \cancel{114}_6} = \frac{1}{18}$ к) $\frac{61}{252} \cdot \frac{12}{305} = \frac{\cancel{61}^1 \cdot \cancel{12}^1}{\cancel{252}_{21} \cdot \cancel{305}_5} = \frac{1}{105}$ л) $\frac{71}{100} \cdot \frac{25}{142} = \frac{\cancel{71}^1 \cdot \cancel{25}^1}{\cancel{100}_4 \cdot \cancel{142}_2} = \frac{1}{8}$