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} $
$240×\frac {4}{5}×\frac {3}{4}=144(幅)$
$28÷2×\frac {5}{7}=10(平方米)$