Question

1．直接寫(xiě)得數(shù)．

$\frac{1}{3}$×0=	$\frac{1}{4}$×$\frac{2}{5}$=	$\frac{5}{6}$×12=	$\frac{7}{12}$×$\frac{3}{14}$=
$\frac{8}{9}$÷$\frac{8}{3}$=	$\frac{3}{10}$÷$\frac{10}{3}$=	9×$\frac{7}{18}$=	$\frac{2}{3}$×$\frac{9}{10}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)乘法和分?jǐn)?shù)除法計(jì)算法則進(jìn)行口算．

解答 解：

$\frac{1}{3}$×0=0	$\frac{1}{4}$×$\frac{2}{5}$=$\frac{1}{10}$	$\frac{5}{6}$×12=10	$\frac{7}{12}$×$\frac{3}{14}$=$\frac{1}{8}$
$\frac{8}{9}$÷$\frac{8}{3}$=$\frac{1}{3}$	$\frac{3}{10}$÷$\frac{10}{3}$=$\frac{9}{100}$	9×$\frac{7}{18}$=$3\frac{1}{2}$	$\frac{2}{3}$×$\frac{9}{10}$=$\frac{3}{5}$

點(diǎn)評(píng) 此題主要考查了分?jǐn)?shù)乘法和分?jǐn)?shù)除法計(jì)算法則的應(yīng)用情況．