$12×\frac{5}{6}=$
$4.8×\frac{5}{48}=$
$\frac{4}{25}×15=$
$0.8×\frac{5}{32}=$
$17×\frac{13}{51}=$
$\frac{6}{7}×\frac{7}{8}=$
$\frac{3}{7}×0.84=$
$\frac{5}{9}×\frac{8}{15}=$
$\frac{4}{9}×\frac{27}{16}=$
$\frac{3}{5}×10=$
$\frac{7}{15}×4.5=$
$\frac{7}{9}×\frac{18}{35}=$
$\frac{20}{27}×\frac{3}{8}=$
$\frac{6}{17}×\frac{17}{36}=$
$\frac{3}{13}×\frac{25}{21}=$
$\frac{9}{10}×\frac{5}{3}=$
$\frac{7}{30}×6.6=$
$\frac{5}{3}×\frac{3}{7}=$
$\frac{2}{5}×\frac{3}{4}=$
$\frac{9}{11}×\frac{7}{15}=$
$\frac{4}{5}×\frac{9}{10}=$
$\frac{2}{3}×\frac{15}{16}=$
$\frac{12}{25}×\frac{15}{16}=$
$\frac{7}{8}×\frac{5}{21}=$

1. 10 0.5 $\frac{12}{5}$ 0.125 $\frac{13}{3}$ $\frac{3}{4}$ 0.36 $\frac{8}{27}$ $\frac{3}{4}$ 6 2.1 $\frac{2}{5}$ $\frac{5}{18}$ $\frac{1}{6}$ $\frac{25}{91}$ $\frac{3}{2}$ 1.54 $\frac{5}{7}$ $\frac{3}{10}$ $\frac{21}{55}$ $\frac{18}{25}$ $\frac{5}{8}$ $\frac{9}{20}$ $\frac{5}{24}$

2 比大小（在○里填上“＞”“＜”或“=”）
建议用时2分钟 评价：☆☆☆
$\frac{3}{4}×\frac{1}{2}$ ○ $\frac{3}{4}$
$0.7×\frac{8}{9}$ ○ $0.7$
$\frac{3}{5}×\frac{3}{5}$ ○ $\frac{3}{5}+\frac{3}{5}$
$\frac{7}{9}×\frac{3}{2}$ ○ $\frac{7}{9}$
$\frac{17}{15}×1$ ○ $\frac{17}{15}$
$\frac{5}{6}×\frac{6}{5}$ ○ $\frac{5}{6}×\frac{3}{4}$

2. ＜ ＜ ＜
＞ = ＞

$\frac{7}{11} - \frac{4}{5} × \frac{7}{11}$
$\frac{2}{9} × \frac{11}{16} × \frac{9}{11}$
$24 × ( \frac{1}{4} + \frac{1}{6} - \frac{1}{3} )$
$\frac{5}{6} × \frac{7}{13} + \frac{5}{6} × \frac{6}{13}$
$7 × ( \frac{3}{7} - \frac{1}{9} ) × 9$
$\frac{7}{10} × ( \frac{5}{7} - \frac{10}{21} ) + \frac{3}{4}$

3. $\frac{7}{55}$ $\frac{1}{8}$ 2 $\frac{5}{6}$ 20 $\frac{11}{12}$