Найдите произведение:
а) $3\frac{3}{8} * 2$;
б) $10\frac{3}{8} * 9$;
в) $12\frac{3}{8} * 5$;
г) $11\frac{3}{8} * 10$.
Образец.
$3\frac{1}{4} * 2 = (3 + \frac{1}{4}) * 2 = 3 * 2 + \frac{1}{4} * 2 = 6 + \frac{1}{2} = 6\frac{1}{2}$
$3\frac{3}{8} * 2 = (3 + \frac{3}{8}) * 2 = 3 * 2 + \frac{3}{8} * 2 = 6 + \frac{3}{4} = 6\frac{3}{4}$
$10\frac{3}{8} * 9 = (10 + \frac{3}{8}) * 9 = 10 * 9 + \frac{3}{8} * 9 = 90 + \frac{27}{8} = 90 + 3\frac{3}{8} = 93\frac{3}{8}$
$12\frac{3}{8} * 5 = (12 + \frac{3}{8}) * 5 = 12 * 5 + \frac{3}{8} * 5 = 60 + \frac{15}{8} = 60 + 1\frac{7}{8} = 61\frac{7}{8}$
$11\frac{3}{8} * 10 = (11 + \frac{3}{8}) * 10 = 11 * 10 + \frac{3}{8} * 10 = 110 + \frac{3}{4} * 5 = 110 + \frac{15}{4} = 110 + 3\frac{3}{4} = 113\frac{3}{4}$