2025年练习与测试六年级数学上册苏教版培优版第51页答案
例 $\frac{2}{5} ÷ 4 = \frac{2}{5} × \frac{1}{4} = \frac{1}{10}$

答案

答题卡：
$\frac{2}{5} ÷ 4$
$ = \frac{2}{5} × \frac{1}{4}$
$ = \frac{2 × 1}{5 × 4}$
$ = \frac{2}{20}$
$ = \frac{1}{10}$
例 $3 ÷ \frac{1}{6} = 3 × 6 = 18$
$\frac{1}{4} ÷ \frac{3}{8} = \frac{1}{4} × \frac{8}{3} = \frac{2}{3}$

答案

例：$3 ÷ \frac{1}{6}$
$= 3 × 6$
$= 18$
$\frac{1}{4} ÷ \frac{3}{8}$
$= \frac{1}{4} × \frac{8}{3}$
$= \frac{8}{12}$
$= \frac{2}{3}$