$\frac{4}{5} × 4 =$　$\frac{1}{3} × 3 =$　$\frac{5}{14} × 7 =$　$\frac{2}{3} × 6 =$
$\frac{2}{11} × 11 =$　$\frac{8}{9} × 2 =$　$\frac{5}{12} × 24 =$　$\frac{1}{4} × 4 =$
$\frac{3}{22} × 0 =$　$\frac{3}{25} × 6 =$　$\frac{3}{4} × 32 =$　$\frac{10}{21} × 14 =$
$\frac{7}{30} × 25 =$　$\frac{7}{8} × 40 =$　$\frac{3}{20} × 4 =$　$\frac{9}{26} × 39 =$
$\frac{4}{77} × 44 =$　$\frac{5}{27} × 18 =$　$\frac{7}{46} × 23 =$　$\frac{5}{72} × 12 =$

1. $\frac{16}{5}$ 1 $\frac{5}{2}$ 4
2 $\frac{16}{9}$ 10 1
0 $\frac{18}{25}$ 24 $\frac{20}{3}$
$\frac{35}{6}$ 35 $\frac{3}{5}$ $\frac{27}{2}$
$\frac{16}{7}$ $\frac{10}{3}$ $\frac{7}{2}$ $\frac{5}{6}$

$\frac{7}{20}\mathrm{L}=(\quad)\mathrm{mL}$ $\frac{3}{5}\mathrm{时}=(\quad)\mathrm{分}$ $\frac{11}{50}\mathrm{kg}=(\quad)\mathrm{g}$
$\frac{3}{10}\mathrm{m}=(\quad)\mathrm{cm}$ $\frac{5}{6}\mathrm{天}=(\quad)\mathrm{时}$ $\frac{2}{7}\mathrm{周}=(\quad)\mathrm{天}$

2. 350 36 220 30 20 2

3 笔算（照样子，算一算）
建议用时3分钟 评价：☆☆☆
$\frac{9}{28}×14=\frac{9}{\underset{2}{\overset{1}{28}}}×14=\frac{9}{2}$
$\frac{23}{17}×51$
$\frac{8}{55}×40$
$\frac{11}{72}×18$
$\frac{7}{15}×35$
$\frac{5}{56}×24$
$\frac{9}{28}×84$
$\frac{47}{98}×49$
$\frac{4}{125}×25$

3. 69 $\frac{64}{11}$ $\frac{11}{4}$ $\frac{49}{3}$ $\frac{15}{7}$
27 $\frac{47}{2}$ $\frac{4}{5}$

转化法 计算下面各题。

4. 16 35