Question

11．直接寫出得數(shù)．

$\frac{1}{2}×\frac{1}{3}$=	$\frac{3}{7}×\frac{2}{3}$=	$\frac{1}{2}+\frac{1}{3}$=	$\frac{1}{2}-\frac{1}{3}$=
$15×\frac{1}{3}$=	$\frac{1}{2}$÷$\frac{1}{3}$=	$\frac{7}{8}×0$=	$\frac{5}{6}×\frac{1}{5}$=
$\frac{4}{9}×\frac{1}{4}$=	$\frac{5}{12}×\frac{3}{10}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)乘法、分?jǐn)?shù)除法、分?jǐn)?shù)加法、分?jǐn)?shù)減法的計(jì)算法則，依次進(jìn)行計(jì)算即可．

解答 解：

$\frac{1}{2}×\frac{1}{3}$=$\frac{1}{6}$	$\frac{3}{7}×\frac{2}{3}$=$\frac{2}{7}$	$\frac{1}{2}+\frac{1}{3}$=$\frac{5}{6}$	$\frac{1}{2}-\frac{1}{3}$=$\frac{1}{6}$
$15×\frac{1}{3}$=5	$\frac{1}{2}$÷$\frac{1}{3}$=$\frac{3}{2}$	$\frac{7}{8}×0$=0	$\frac{5}{6}×\frac{1}{5}$=$\frac{1}{6}$
$\frac{4}{9}×\frac{1}{4}$=$\frac{1}{9}$	$\frac{5}{12}×\frac{3}{10}$=$\frac{1}{8}$

點(diǎn)評(píng) 靈活掌握分?jǐn)?shù)乘法、分?jǐn)?shù)除法、分?jǐn)?shù)加法、分?jǐn)?shù)減法的計(jì)算法則，是解答此題的關(guān)鍵．