电子课本网 第46页

第46页

信息发布者:
乘法分配
300
$\frac{8}{3}$
$\frac{25}{81}$
$\frac{4}{45}$
$5\frac{5}{6}$
$=\frac {3}{5}×\frac {8}{3}×\frac {1}{12}$
$=\frac {2}{15}$
$=55×\frac {1}{56}$
$=\frac {55}{56}$
=10-2
=8
$=5-\frac {1}{8}×\frac {13}{2}-\frac {3}{16}$
$=5-1$
$=4$
$=\frac {1}{4}×(\frac {6}{7}+\frac {1}{7})$
$=\frac {1}{4}$
$=\frac {3}{4}×\frac {1}{10}$
$=\frac {3}{40}$
C
$\frac{2}{5}×\frac{5}{8}=\frac{1}{4}(吨)\ $
$\frac{2}{5}-\frac{1}{4}=\frac{3}{20}(吨)$
$答:六年级的同学摘了\frac {1}{4}吨草莓,摘的草莓$
$比梨少\frac {3}{20}吨。$
$(\frac {5}{2}-\frac {2}{5}×4)÷6=\frac {3}{20}(升)$
$答:每个杯子里倒进饮料\frac {3}{20}升。$
$(\frac{12}{13}+\frac{12}{17}+\frac{12}{19})÷(\frac{4}{13}+\frac{4}{17}+\frac{4}{19})\ $
$=3×(\frac{4}{13}+\frac{4}{17}+\frac{4}{19})÷(\frac{4}{13}+\frac{4}{17}+\frac{4}{19})\ $
$=3$
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