Question

18．直接寫(xiě)得數(shù)．

$\frac{5}{6}$+$\frac{3}{4}$﹦	$\frac{5}{6}$-$\frac{3}{4}$﹦	$\frac{5}{6}$×$\frac{3}{4}$﹦	$\frac{5}{6}$÷$\frac{3}{4}$﹦
$\frac{2}{9}$×0.6﹦	$\frac{5}{8}$×$\frac{4}{15}$×0﹦	0÷$\frac{5}{8}$﹦	$\frac{1}{3}$×$\frac{1}{4}$÷$\frac{1}{3}$×$\frac{1}{4}$﹦

Answer 1

分析 根據(jù)分?jǐn)?shù)四則運(yùn)算的計(jì)算法則進(jìn)行計(jì)算即可，$\frac{1}{3}$×$\frac{1}{4}$÷$\frac{1}{3}$×$\frac{1}{4}$運(yùn)用乘法交換律簡(jiǎn)算．

解答 解：

$\frac{5}{6}$+$\frac{3}{4}$﹦$\frac{19}{12}$	$\frac{5}{6}$-$\frac{3}{4}$﹦$\frac{1}{12}$	$\frac{5}{6}$×$\frac{3}{4}$﹦$\frac{5}{8}$	$\frac{5}{6}$÷$\frac{3}{4}$﹦$\frac{10}{9}$
$\frac{2}{9}$×0.6﹦$\frac{2}{15}$	$\frac{5}{8}$×$\frac{4}{15}$×0﹦0	0÷$\frac{5}{8}$﹦0	$\frac{1}{3}$×$\frac{1}{4}$÷$\frac{1}{3}$×$\frac{1}{4}$﹦$\frac{1}{16}$

點(diǎn)評(píng) 此題考查了分?jǐn)?shù)四則運(yùn)算的計(jì)算法則的運(yùn)用．