1. 直接写出得数。(24☆)
$5÷\frac{5}{21}=$
$\frac{40}{21}÷\frac{8}{7}=$
$\frac{73}{100}÷0.73=$
$\frac{33}{50}÷\frac{11}{40}=$
$\frac{12}{25}÷\frac{6}{25}=$
$1÷\frac{8}{17}=$
$\frac{25}{7}÷\frac{5}{7}=$
$\frac{1}{5}÷\frac{2}{3}=$
$\frac{60}{49}÷\frac{30}{7}=$
$\frac{5}{23}÷\frac{30}{23}=$
$\frac{80}{99}÷\frac{10}{11}=$
$\frac{50}{41}÷10=$
$16÷\frac{8}{7}=$
$\frac{15}{8}÷\frac{3}{16}=$
$\frac{1}{5}÷12=$
$0÷\frac{4}{11}=$
$\frac{8}{25}÷\frac{32}{5}=$
$\frac{1}{6}÷\frac{3}{20}=$
$\frac{35}{36}÷\frac{7}{18}=$
$\frac{9}{8}÷3=$
$\frac{5}{11}÷\frac{3}{11}=$
$24÷\frac{8}{11}=$
$\frac{24}{25}÷\frac{4}{5}=$
$\frac{17}{30}÷\frac{17}{15}=$

1.21 2.$\frac{5}{3}$ 3.1 4.$\frac{12}{5}$ 5.2 6.$\frac{17}{8}$ 7.5 8.$\frac{3}{10}$ 9.$\frac{2}{7}$ 10.$\frac{1}{6}$ 11.$\frac{8}{9}$ 12.$\frac{5}{41}$ 13.14 14.10 15.$\frac{1}{60}$ 16.0 17.$\frac{1}{20}$ 18.$\frac{10}{9}$ 19.$\frac{5}{2}$ 20.$\frac{3}{8}$ 21.$\frac{5}{3}$ 22.33 23.$\frac{6}{5}$ 24.$\frac{1}{2}$

2. 在○里填上“＞”“＜”或“=”。(6☆)
$\frac{8}{13}÷\frac{7}{10}$ ○ $\frac{8}{13}$
$\frac{11}{27}÷\frac{6}{5}$ ○ $\frac{11}{27}$
$\frac{7}{25}÷4$ ○ $\frac{7}{25}×\frac{1}{4}$
$\frac{8}{9}÷5$ ○ $\frac{8}{9}×0.2$
$\frac{4}{5}×\frac{3}{5}$ ○ $\frac{4}{5}÷\frac{3}{5}$
$10÷\frac{3}{5}$ ○ $\frac{3}{5}÷10$

＞ ＜ = = ＜ ＞

3. 计算下面各题,能简算的要简算。(27☆)
$11.26×\frac{3}{4}+0.74÷\frac{4}{3}-7$
$\frac{3}{5}×\frac{1}{4}+\frac{3}{5}×\frac{3}{4}$
$6+\frac{2}{7}÷\frac{3}{7}$
$(\frac{4}{7}+\frac{8}{9})×7×9$
$\frac{4}{15}×24÷\frac{4}{21}$
$19×\frac{9}{19}+\frac{10}{19}×19$
$(\frac{7}{12}+\frac{5}{6})÷\frac{1}{24}$
$(\frac{5}{8}-\frac{1}{4})÷\frac{1}{16}$
$\frac{20}{21}÷\frac{5}{7}×\frac{3}{4}$

1.2 2.$\frac{3}{5}$ 3.$6\frac{2}{3}$ 4.92 5.$\frac{168}{5}$ 6.19 7.34 8.6 9.1