Question

12．直接寫(xiě)出得數(shù)．

$\frac{5}{12}$×$\frac{4}{15}$=	$\frac{5}{7}$÷$\frac{7}{5}$=	$\frac{14}{15}$-$\frac{4}{5}$=	$\frac{2}{7}$×3=
$\frac{7}{15}$÷7=	$\frac{5}{12}$×$\frac{6}{15}$×0=	$\frac{5}{2}$×$\frac{2}{5}$=	$\frac{5}{6}$+$\frac{2}{3}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)減法、分?jǐn)?shù)乘除法的計(jì)算方法進(jìn)行解答即可．

解答 解：

$\frac{5}{12}$×$\frac{4}{15}$=$\frac{1}{9}$	$\frac{5}{7}$÷$\frac{7}{5}$=$\frac{25}{49}$	$\frac{14}{15}$-$\frac{4}{5}$=$\frac{2}{15}$	$\frac{2}{7}$×3=$\frac{6}{7}$
$\frac{7}{15}$÷7=$\frac{1}{15}$	$\frac{5}{12}$×$\frac{6}{15}$×0=0	$\frac{5}{2}$×$\frac{2}{5}$=1	$\frac{5}{6}$+$\frac{2}{3}$=$\frac{3}{2}$

點(diǎn)評(píng) 此題主要考查的是分?jǐn)?shù)減法、分?jǐn)?shù)乘除法的計(jì)算方法的應(yīng)用．