Вычислите, используя распределительный закон:
а) $1\frac{1}{3} * 2 = (1 + \frac{1}{3}) * 2 = 1 * 2 + \frac{1}{3} * 2 = 2 + \frac{2}{3} = 2\frac{2}{3}$;
б) $1\frac{1}{5} * 2$;
в) $2\frac{1}{5} * 3$;
г) $3\frac{1}{4} * 3$;
д) $2\frac{2}{7} * 3$;
е) $2 * 5\frac{1}{4}$;
ж) $2\frac{4}{9} * 9$;
з) $2 * 5\frac{7}{8}$;
и) $2\frac{1}{9} * 3$.
$1\frac{1}{5} * 2 = (1 + \frac{1}{5}) * 2 = 1 * 2 + \frac{1}{5} * 2 = 2 + \frac{2}{5} = 2\frac{2}{5}$
$2\frac{1}{5} * 3 = (2 + \frac{1}{5}) * 3 = 2 * 3 + \frac{1}{5} * 3 = 6 + \frac{3}{5} = 6\frac{3}{5}$
$3\frac{1}{4} * 3 = (3 + \frac{1}{4}) * 3 = 3 * 3 + \frac{1}{4} * 3 = 9 + \frac{3}{4} = 9\frac{3}{4}$
$2\frac{2}{7} * 3 = (2 + \frac{2}{7}) * 3 = 2 * 3 + \frac{2}{7} * 3 = 6 + \frac{6}{7} = 6\frac{6}{7}$
$2 * 5\frac{1}{4} = 2 * (5 + \frac{1}{4}) = 2 * 5 + 2 * \frac{1}{4} = 10 + \frac{2}{4} = 10\frac{2}{4} = 10\frac{1}{2}$
$2\frac{4}{9} * 9 = (2 + \frac{4}{9}) * 9 = 2 * 9 + \frac{4}{9} * 9 = 18 + 4 = 22$
$2 * 5\frac{7}{8} = 2 * (5 + \frac{7}{8}) = 2 * 5 + 2 * \frac{7}{8} = 10 + \frac{7}{4} = 10 + 1\frac{3}{4} = 11\frac{3}{4}$
$2\frac{1}{9} * 3 = (2 + \frac{1}{9}) * 3 = 2 * 3 + \frac{1}{9} * 3 = 6 + \frac{1}{3} = 6\frac{1}{3}$
Пожауйста, оцените решение
