1. 直接写出得数。
$36× \dfrac{4}{9}=$
$\dfrac{6}{7}×35=$
$\dfrac{5}{2}×\dfrac{1}{3}=$
$\dfrac{4}{5}×2.5=$
$\dfrac{5}{8}×32=$
$22×\dfrac{5}{11}=$
$5+\dfrac{1}{5}=$
$2.1×\dfrac{5}{14}=$
$\dfrac{15}{8}×\dfrac{4}{9}=$
$5×\dfrac{1}{5}=$
$\dfrac{3}{4}×\dfrac{8}{9}=$
$3-\dfrac{1}{2}=$
$28×\dfrac{5}{4}=$
$\dfrac{13}{12}×3.6=$
$\dfrac{5}{7}×77=$
$\dfrac{11}{15}×\dfrac{5}{22}=$

$36× \dfrac{4}{9}=16$
$\dfrac{6}{7}×35=30$
$\dfrac{5}{2}×\dfrac{1}{3}=\dfrac{5}{6}$
$\dfrac{4}{5}×2.5=2$
$\dfrac{5}{8}×32=20$
$22×\dfrac{5}{11}=10$
$5+\dfrac{1}{5}=5\dfrac{1}{5}$
$2.1×\dfrac{5}{14}=0.75$
$\dfrac{15}{8}×\dfrac{4}{9}=\dfrac{5}{6}$
$5×\dfrac{1}{5}=1$
$\dfrac{3}{4}×\dfrac{8}{9}=\dfrac{2}{3}$
$3-\dfrac{1}{2}=2\dfrac{1}{2}$
$28×\dfrac{5}{4}=35$
$\dfrac{13}{12}×3.6=3.9$
$\dfrac{5}{7}×77=55$
$\dfrac{11}{15}×\dfrac{5}{22}=\dfrac{1}{6}$

2.连一连。
$24×\frac{2}{3}$
$\frac{3}{5}×\frac{20}{3}$
$\frac{15}{4}×\frac{2}{5}$
4

$\frac{3}{2}$
$\frac{6}{5}×\frac{15}{12}$
$\frac{12}{11}×\frac{44}{3}$
$\frac{6}{7}×\frac{14}{3}$

$24×\frac{2}{3}=16$
$\frac{3}{5}×\frac{20}{3}=4$
$\frac{15}{4}×\frac{2}{5}=\frac{3}{2}$
$\frac{6}{5}×\frac{15}{12}=\frac{3}{2}$
$\frac{12}{11}×\frac{44}{3}=16$
$\frac{6}{7}×\frac{14}{3}=4$
连线对应：
$24×\frac{2}{3}$、$\frac{12}{11}×\frac{44}{3}$ 连 16
$\frac{3}{5}×\frac{20}{3}$、$\frac{6}{7}×\frac{14}{3}$ 连 4
$\frac{15}{4}×\frac{2}{5}$、$\frac{6}{5}×\frac{15}{12}$ 连 $\frac{3}{2}$

3.在○里填上“＞”“＜”或“=”。
$\frac{3}{4} + \frac{3}{4}$ ○ $\frac{3}{4} × \frac{3}{4}$
$\frac{4}{5} × \frac{7}{8}$ ○ $\frac{7}{8} × 0.4$
$\frac{9}{13} × \frac{1}{2}$ ○ $\frac{9}{13} × 2$
小丽将20 g糖放入180 g水中。糖完全溶解后，小丽将糖水搅拌均匀，喝了这杯糖水的$\frac{1}{4}$。实际上她喝掉了多少克糖？
反思 我错了（）道题。 自我评价：

$\frac{3}{4}+\frac{3}{4}$ $\boldsymbol{＞}$ $\frac{3}{4}×\frac{3}{4}$
$\frac{4}{5}×\frac{7}{8}$ $\boldsymbol{＞}$ $\frac{7}{8}×0.4$
$\frac{9}{13}×\frac{1}{2}$ $\boldsymbol{＜}$ $\frac{9}{13}×2$
$20×\frac{1}{4}=5$（克）
答：实际上她喝掉了5克糖。