Question

10．口算．

$\frac{1}{6}$×12=	$\frac{3}{5}$×$\frac{5}{7}$=	$\frac{7}{8}$÷$\frac{9}{4}$=	18÷$\frac{6}{5}$=
$\frac{5}{3}$+$\frac{5}{3}$=	0.8×$\frac{5}{8}$=	1.2÷$\frac{3}{4}$=	16×$\frac{3}{8}$=
$\frac{5}{7}$÷$\frac{25}{14}$=	$\frac{3}{5}$-$\frac{3}{8}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)乘除法的計(jì)算方法計(jì)算．

解答 解：$\frac{1}{6}×12$=2        $\frac{3}{5}×\frac{5}{7}=\frac{3}{7}\\;\\;\\;\\;\\;\\;\\;\\;\\;\\;\frac{7}{8}÷\frac{9}{4}=\frac{7}{18}$           $\frac{7}{8}$÷$\frac{9}{4}$=$\frac{7}{18}$         18÷$\frac{6}{5}$=15
$\frac{5}{3}+\frac{5}{3}=\frac{10}{3}$         0.8×$\frac{5}{8}$=0.5         1.2÷$\frac{3}{4}$=1.6        16×$\frac{3}{8}$=6
$\frac{5}{7}÷\frac{25}{14}=\frac{2}{5}$         $\frac{3}{5}-\frac{3}{8}$=$\frac{9}{40}$

點(diǎn)評(píng) 解答的基礎(chǔ)是掌握分?jǐn)?shù)乘除法的計(jì)算方法，關(guān)鍵是細(xì)心計(jì)算．