第117页

信息发布者:
1
$\frac{1}{6}$
$\frac{19}{12}$
$\frac{7}{18}$
$\frac{11}{7}$
0.16
1.3
$\frac{4}{5}$
0.6
$\frac{7}{8}$
$=\frac {24-9+20}{30}$
$= \frac {7}{6} $
$=\frac {1}{13}+\frac {3}{4}$
$= \frac {43}{52} $
$=(\frac {4}{9}+\frac {5}{9})+(\frac {5}{13}+\frac {7}{13})$
$= \frac {25}{13} $
$=(\frac {7}{10}+\frac {3}{10})-(\frac {1}{7}+\frac {6}{7})$
$= 0 $
$=\frac {11}{12}+\frac {1}{12}-\frac {1}{5}$
$= \frac {4}{5} $
$=\frac {3}{8}-\frac {1}{4}+(\frac {17}{20}+\frac {3}{20})$
$= \frac {9}{8} $
$28÷2×\frac {5}{7}=10(平方米)$
$240×\frac {4}{5}×\frac {3}{4}=144(幅)$