1. 直接写出得数。
$120÷0.6=$
$10÷2.5=$
$3.14×(3^2 - 2^2)=$
$\frac{1}{6}÷\frac{4}{9}=$
$\frac{8}{15}÷\frac{2}{3}=$
$\frac{2}{15}÷\frac{4}{15}×\frac{1}{3}=$
$\frac{3}{7}÷6=$
$\frac{2}{7}×\frac{12}{5}=$
$\frac{3}{5}+\frac{3}{4}÷\frac{3}{5}+\frac{3}{4}=$
$\frac{7}{12}÷\frac{5}{6}=$
$\frac{7}{12}×\frac{3}{14}=$
$0÷\frac{4}{9}×\frac{2}{3}=$
$\frac{8}{9}÷\frac{4}{7}=$
$\frac{3}{7}×\frac{4}{15}=$
$\frac{3}{8}÷\frac{3}{4}÷\frac{9}{10}=$

200 4 15.7 $\frac{3}{8}$ $\frac{4}{5}$ $\frac{1}{6}$ $\frac{1}{14}$ $\frac{24}{35}$ $\frac{13}{5}$ $\frac{7}{10}$ $\frac{1}{8}$ 0 $\frac{14}{9}$ $\frac{4}{35}$ $\frac{5}{9}$

2. 递等式计算。
$(\frac{5}{12}+\frac{7}{18})×36$
$2.4×\frac{4}{5}+7.6÷\frac{5}{4}$
$\frac{12}{25}÷5÷\frac{3}{5}$
$14×15×(\frac{3}{14}+\frac{2}{15})$
$\frac{8}{15}×16-\frac{8}{15}$
$(\frac{1}{6}+\frac{1}{5})÷\frac{11}{15}+\frac{3}{5}$

29 8 $\frac{4}{25}$ 73 8 $\frac{11}{10}$

3. 看图列式计算。
(1)
(2)

(1)$20+20×\frac{2}{5}=28$(个)
(2)$300-300×\frac{1}{3}=200$(元)