Вычислите: 1) $6\frac{1}{4}-2\frac{3}{4}$; 2) $3\frac{1}{6}-1\frac{1}{2}$; 3) $1\frac{2}{7}\cdot3$; 4) $2\frac{1}{4}\cdot1\frac{1}{3}$; 5) $2\frac{2}{5}:4$; 6) $4\frac{1}{2}:1\frac{1}{4}$.

Question

Вопрос: $Фото задания: Вычислите: 1) $6\frac{1}{4}-2\frac{3}{4}$; 2) $3\frac{1}{6}-1\frac{1}{2}$; 3) $1\frac{2}{7}\cdot3$; 4)…$ Фото задания

Accepted Answer

$6\frac{1}{4}-2\frac{3}{4}=5\frac{5}{4}-2\frac{3}{4}=3\frac{2}{4}=3\frac{1}{2}$.
$3\frac{1}{6}-1\frac{1}{2}=3\frac{1}{6}-1\frac{3}{6}=1\frac{4}{6}=1\frac{2}{3}$.
$1\frac{2}{7}\cdot3=\frac{9}{7}\cdot3=\frac{27}{7}=3\frac{6}{7}$.
$2\frac{1}{4}\cdot1\frac{1}{3}=\frac{9}{4}\cdot\frac{4}{3}=3$.
$2\frac{2}{5}:4=\frac{12}{5}:4=\frac{12}{5}\cdot\frac{1}{4}=\frac{3}{5}$.
$4\frac{1}{2}:1\frac{1}{4}=\frac{9}{2}:\frac{5}{4}=\frac{9}{2}\cdot\frac{4}{5}=\frac{18}{5}=3\frac{3}{5}$.

Вычислите: 1) \(6\frac{1}{4}-2\frac{3}{4}\); 2) \(3\frac{1}{6}-1\frac{1}{2}\); 3) \(1\frac{2}{7}\cdot3\); 4) \(2\frac{1}{4}\cdot1\frac{1}{3}\); 5) \(2\frac{2}{5}:4\); 6) \(4\frac{1}{2}:1\frac{1}{4}\).