Question

2．口算

$\frac{5}{3}$×6=	$\frac{5}{12}$×6=	$\frac{3}{5}$×$\frac{5}{6}$=
$\frac{1}{5}$+$\frac{1}{6}$=	$\frac{1}{5}$÷$\frac{1}{5}$=	$\frac{2}{3}$÷6=
$\frac{5}{6}$×15=	$\frac{2}{3}$×0=	$\frac{5}{8}$×0.8=

Answer 1

分析 本題根據(jù)分?jǐn)?shù)乘法、除法、及加法的運(yùn)算法則計(jì)算即可．

解答 解：

$\frac{5}{3}$×6=10	$\frac{5}{12}$×6=$\frac{5}{2}$	$\frac{3}{5}$×$\frac{5}{6}$=$\frac{1}{2}$
$\frac{1}{5}$+$\frac{1}{6}$=$\frac{11}{30}$	$\frac{1}{5}$÷$\frac{1}{5}$=1	$\frac{2}{3}$÷6=$\frac{1}{9}$
$\frac{5}{6}$×15=$\frac{25}{2}$	$\frac{2}{3}$×0=0	$\frac{5}{8}$×0.8=$\frac{1}{2}$

點(diǎn)評(píng) 完成此類題目要注意分析式中數(shù)據(jù)，然后快速準(zhǔn)確得出答案．