一、口算。
0.09 - 0.08 =
7.5 ÷ 1.5 =
340 × 0.4 =
2.01 + 0.9 =
533 × 2 =
9 ÷ 0.45 =
200 × 340 =
9.6 ÷ 0.6 =
6.23 - 1.98 =
7.8 × 0.5 =
162 + 58 =
37.5 × 200 =
$\frac{4}{9} × \frac{1}{8} =$
$\frac{33}{35} × \frac{5}{11} =$
$\frac{1}{4} ÷ \frac{5}{24} =$
$\frac{4}{9} × \frac{3}{20} =$
$\frac{9}{16} ÷ \frac{3}{4} =$
$0.6 × \frac{10}{3} =$
$\frac{1}{2} + \frac{3}{5} =$
$\frac{3}{7} ÷ 21 =$
$\frac{3}{4} × \frac{10}{21} =$
$10 × \frac{1}{5} =$
$\frac{2}{3} × \frac{5}{12} =$
$\frac{7}{16} + 0.125 =$
0.09 - 0.08 =
7.5 ÷ 1.5 =
340 × 0.4 =
2.01 + 0.9 =
533 × 2 =
9 ÷ 0.45 =
200 × 340 =
9.6 ÷ 0.6 =
6.23 - 1.98 =
7.8 × 0.5 =
162 + 58 =
37.5 × 200 =
$\frac{4}{9} × \frac{1}{8} =$
$\frac{33}{35} × \frac{5}{11} =$
$\frac{1}{4} ÷ \frac{5}{24} =$
$\frac{4}{9} × \frac{3}{20} =$
$\frac{9}{16} ÷ \frac{3}{4} =$
$0.6 × \frac{10}{3} =$
$\frac{1}{2} + \frac{3}{5} =$
$\frac{3}{7} ÷ 21 =$
$\frac{3}{4} × \frac{10}{21} =$
$10 × \frac{1}{5} =$
$\frac{2}{3} × \frac{5}{12} =$
$\frac{7}{16} + 0.125 =$
答案
1. 0.01
2. 5
3. 136
4. 2.91
5. 1066
6. 20
7. 68000
8. 16
9. 4.25
10. 3.9
11. 220
12. 7500
13. $\frac{1}{18}$
14. $\frac{3}{7}$
15. $\frac{6}{5}$
16. $\frac{1}{15}$
17. $\frac{3}{4}$
18. 2
19. $\frac{11}{10}$
20. $\frac{1}{49}$
21. $\frac{5}{14}$
22. 2
23. $\frac{5}{18}$
24. $\frac{9}{16}$
2. 5
3. 136
4. 2.91
5. 1066
6. 20
7. 68000
8. 16
9. 4.25
10. 3.9
11. 220
12. 7500
13. $\frac{1}{18}$
14. $\frac{3}{7}$
15. $\frac{6}{5}$
16. $\frac{1}{15}$
17. $\frac{3}{4}$
18. 2
19. $\frac{11}{10}$
20. $\frac{1}{49}$
21. $\frac{5}{14}$
22. 2
23. $\frac{5}{18}$
24. $\frac{9}{16}$
二、用竖式计算。
$5.9×1.2=$
$12.74÷2.6=$
$8.3×0.94=$
$25.3÷0.88=$
$34.3×0.23≈$
(得数保留两位小数)
$6.27÷3.5≈$
(得数保留两位小数)
$5.9×1.2=$
$12.74÷2.6=$
$8.3×0.94=$
$25.3÷0.88=$
$34.3×0.23≈$
(得数保留两位小数)
$6.27÷3.5≈$
(得数保留两位小数)
答案
1. 7.08
2. 4.9
3. 7.802
4. 28.75
5. 7.89
6. 1.79
2. 4.9
3. 7.802
4. 28.75
5. 7.89
6. 1.79
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