Question

6．計算：
$\frac{5}{6}×\frac{2}{5}$=$\frac{9}{10}$×$\frac{1}{9}$=$\frac{1}{8}$×$\frac{4}{7}$=$\frac{3}{8}$×$\frac{3}{4}$=

$\frac{12}{25}$×$\frac{5}{12}$=$\frac{3}{10}$×5=$\frac{7}{11}$×$\frac{11}{7}$=$\frac{4}{9}$×$\frac{3}{8}$=

Answer 1

分析 根據分數(shù)乘法的計算方法進行解答即可．

解答 解：$\frac{5}{6}$×$\frac{2}{5}$=$\frac{1}{3}$  $\frac{9}{10}$×$\frac{1}{9}$=$\frac{1}{10}$  $\frac{1}{8}$×$\frac{4}{7}$=$\frac{1}{14}$  $\frac{3}{8}$×$\frac{3}{4}$=$\frac{9}{32}$

$\frac{12}{25}$×$\frac{5}{12}$=$\frac{1}{5}$  $\frac{3}{10}$×5=$\frac{3}{2}$  $\frac{7}{11}$×$\frac{11}{7}$=1  $\frac{4}{9}$×$\frac{3}{8}$=$\frac{1}{6}$

點評 此題考查了學生對分數(shù)乘法的計算方法的掌握情況．