1. 直接写出得数。
实际用时：分钟
$\frac{9}{8}×\frac{4}{3}=$ $\frac{5}{2}+\frac{3}{8}=$ $\frac{1}{18}+\frac{5}{6}+\frac{17}{18}=$ $8×\frac{1}{7}×\frac{3}{4}=$
$\frac{13}{6}-\frac{1}{6}=$ $\frac{7}{12}÷7=$ $\frac{5}{8}+\frac{3}{7}-\frac{5}{8}=$ $15÷\frac{3}{4}÷\frac{5}{7}=$
$\frac{5}{11}+\frac{3}{4}=$ $\frac{4}{15}×\frac{5}{12}=$ $\frac{1}{8}×(1-\frac{1}{5})=$ $\frac{1}{5}÷5×\frac{25}{12}=$
$\frac{3}{14}÷6=$ $\frac{5}{7}-\frac{5}{7}=$ $\frac{32}{11}÷(1-\frac{3}{11})=$ $\frac{1}{5}×\frac{15}{8}+\frac{5}{8}=$
$\frac{9}{13}+\frac{1}{2}=$ $\frac{12}{11}×\frac{5}{6}=$ $\frac{15}{11}÷\frac{45}{11}+\frac{2}{3}=$ $\frac{1}{3}×2÷\frac{1}{4}=$
$\frac{1}{5}-\frac{4}{35}=$ $\frac{7}{31}÷\frac{21}{31}=$ $\frac{7}{8}-\frac{2}{3}+\frac{1}{8}=$ $\frac{4}{21}×\frac{7}{8}+\frac{1}{3}=$

1. $\frac{3}{2}$　$\frac{23}{8}$　$\frac{11}{6}$　$\frac{6}{7}$
$2$　$\frac{1}{12}$　$\frac{3}{7}$　$28$
$\frac{53}{44}$　$\frac{1}{9}$　$\frac{1}{10}$　$\frac{1}{12}$
$\frac{1}{28}$　$0$　$4$　$1$
$\frac{31}{26}$　$\frac{10}{11}$　$1$　$\frac{8}{3}$
$\frac{3}{35}$　$\frac{1}{3}$　$\frac{1}{3}$　$\frac{1}{2}$

2. 计算下面各题。
$\frac{7}{15}×\frac{3}{8}+\frac{7}{15}×\frac{5}{8}$
$(\frac{3}{8}+\frac{1}{12})×8+\frac{1}{3}$
$2÷[\frac{3}{5}×(\frac{1}{3}+\frac{1}{7})]$

2. $\frac{7}{15}$　$4$　$7$

3. 在直线上标出表示$1\frac{1}{2}$、-2.5、80%、0.5 的点，并在对应位置写出各数。

3.

计算：$(1-\dfrac{1}{2})×(1-\dfrac{1}{3})×(1-\dfrac{1}{4})×(1-\dfrac{1}{5})×···×(1-\dfrac{1}{99})×(1-\dfrac{1}{100})$

【思维提升】$\frac{1}{100}$