总复习（二）

0.75× $\frac{\text{2}}{\text{5}}$ =        $\frac{\text{3}}{\text{7}}$ ÷ $\frac{\text{8}}{\text{7}}$ =           $\frac{\text{1}}{\text{2}}$ × $\frac{\text{6}}{\text{7}}$ =            $\frac{\text{5}}{\text{21}}$ ×14=

$\frac{\text{9}}{\text{10}}$ ÷ $\frac{\text{3}}{\text{5}}$ =       48÷ $\frac{\text{6}}{\text{19}}$ =          $\frac{\text{3}}{\text{10}}$ ÷ $\frac{\text{2}}{\text{5}}$ =        3.2÷ $\frac{\text{4}}{\text{15}}$ =

9×40%=           $\frac{\text{1}}{\text{4}}$ ÷50%=           $\frac{\text{2}}{\text{3}}$ ÷9=              75% × 16=

①7.2×（ $\frac{\text{5}}{\text{8}}$ - $\frac{\text{2}}{\text{9}}$ ）

② $\frac{\text{16}}{\text{35}}$ ÷ $\frac{\text{8}}{\text{15}}$ ÷ $\frac{\text{2}}{\text{9}}$

③ $\frac{\text{3}}{\text{4}}$ ×52%+0.75×0.48

④ $\frac{1}{18}$ ×（ $\frac{\text{1}}{\text{3}}$ + $\frac{\text{5}}{\text{12}}$ ）

⑤15× $\frac{\text{15}}{\text{16}}$

⑥ $\frac{\text{8}}{\text{15}}$ ×[ $\frac{\text{5}}{\text{6}}$ ÷（ $\frac{\text{7}}{\text{9}}$ - $\frac{\text{1}}{\text{3}}$ ）]