$120×40\% =$
$1-70\% =$
$1-25\% =$
$1÷75\% =$
$9.8÷98\% =$
$50\% +3.5 =$
$2×60\% =$
$45÷90\% =$
$115\% -1.02 =$
$\frac{1}{4} -24\% =$
$5÷25\% =$
$\frac{2}{3}×40\% =$
$80\% -42\% =$
$20\% +\frac{3}{4} =$
$1-1\% =$
$35×60\% =$
$18÷30\% =$
$35\% ×0.4 =$
$\frac{4}{5}×25\% =$
$80\% ÷5 =$

1. 48
2. 0.3
3. 0.75
4. $\frac{4}{3}$
5. 10
6. 4
7. 1.2
8. 50
9. 0.13
10. 0.01
11. 20
12. $\frac{4}{15}$
13. 0.38
14. 0.95
15. 0.99
16. 21
17. 60
18. 0.14
19. 0.2
20. 0.16

2 脱式计算（能简算的要简算）
建议用时4分钟 评价：☆☆☆
$(\frac{1}{16} - \frac{1}{24}) ÷ 12.5\%$
$0.8 ÷ 62.5\% × \frac{5}{4}$
$2.9 × 70\% + 7.1 × 70\%$
$(1\frac{1}{4} + \frac{7}{9} - \frac{5}{18}) ÷ \frac{1}{36}$
$10.9 - (6.6 + \frac{1}{8} ÷ 12.5\%)$
$2.8 × 5.1 + 3.9 × 2\frac{4}{5} + 280\%$

1. $\frac{1}{6}$
2. 1.6
3. 7
4. 63
5. 3.3
6. 28

3 看图列式
建议用时2分钟 评价：☆☆☆
(1)
(2)

(1) $34÷(1-15\%)=40$(人)
(2) $48×(1-25\%)=36$(吨)