Вариант №1 №1 Образец: 25 2.5 10 = 37-3.7 21 Решите: 1. 2.3 = 57 2. 1.5 86 3. 7.2 = 11 9 4. 10.2 = 11 3 5. 14 = 15 5

Решим примеры:

1. $$1.\ \frac{2}{5} \cdot \frac{3}{7} = \frac{2 \cdot 3}{5 \cdot 7} = \frac{6}{35}$$
2. $$2.\ \frac{1}{8} \cdot \frac{5}{6} = \frac{1 \cdot 5}{8 \cdot 6} = \frac{5}{48}$$
3. $$3.\ \frac{7}{11} \cdot \frac{2}{9} = \frac{7 \cdot 2}{11 \cdot 9} = \frac{14}{99}$$
4. $$4.\ \frac{10}{11} \cdot \frac{2}{3} = \frac{10 \cdot 2}{11 \cdot 3} = \frac{20}{33}$$
5. $$5.\ \frac{1}{15} \cdot \frac{4}{5} = \frac{1 \cdot 4}{15 \cdot 5} = \frac{4}{75}$$

Ответ:

1. $$\frac{6}{35}$$
2. $$\frac{5}{48}$$
3. $$\frac{14}{99}$$
4. $$\frac{20}{33}$$
5. $$\frac{4}{75}$$