第53页

信息发布者：
8
10
25
2
6
42
24
9
30
$2÷5=\frac {2}{5}\ \ $
$2÷6=\frac {1}{3}$
$答:李师傅完成\frac {2}{5},张师傅完成\frac {1}{3}。$
$1÷(4-1)=\frac {1}{3}$
$答:每锯一次占\frac {1}{3}。$
$\frac {7}{8}=\frac {63}{72}$
$\frac {7}{9}=\frac {56}{72}$
$如\frac {19}{24},\frac {59}{72}$

$\frac {1}{4}=\frac {3}{12}$
$\frac {4}{9}=\frac {4}{9}$
$\frac {2}{3}=\frac {6}{9}$
$\frac {1}{3}=\frac {8}{24}$
$\frac {3}{8}=\frac {9}{24}$
$\frac {5}{6}=\frac {10}{12}$
$\frac {3}{9}和\frac {5}{9}$
$\frac {6}{10}和\frac {9}{10}$
$\frac {6}{21}和\frac {14}{21}$
$\frac {8}{18}和\frac {3}{18}$
$\frac {25}{30}和\frac {36}{30}$
$\frac {16}{30}和\frac {9}{30}$
$2÷4=\frac {1}{2}$
$答:这两段是这根木料的\frac {1}{2}。$
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