电子课本网 第77页

第77页

信息发布者:

3
3
5
20
36
5
4:5
9:1
直角
等腰
​$ =\frac {7}{8}-\frac {1}{6}$​
​$ =\frac {17}{24}$​
$=13×\frac {1}{13}×12+13×\frac {5}{6}×12$
$=12+65×2$
$=12+130$
$=142$
​$ =\frac {4}{11}×(\frac {7}{8}+\frac {1}{8})$​
​$ =\frac {4}{11}×1$​
​$ =\frac {4}{11}$​
$=5:7$
$=\frac {5}{7}$
=21:14
=3:2
=1.5
=3:2
=1.5
×
×
​$ (\frac {11}{10}+\frac {8}{5})×\frac {4}{5}÷2=\frac {27}{25}($​平方分米​$)$​