一、口算。
$5.4÷0.03=$ $8.6+32.3=$ $6.8+3.25=$
$4.8÷16=$ $1.6×40=$ $5.5×0.4=$
$58-5.8=$ $44×0.6=$ $726+595=$
$40.8÷2=$ $9.55-4.95=$ $81.6+0.4=$
$\frac{1}{4}÷\frac{3}{4}=$ $\frac{3}{8}×\frac{4}{7}=$ $\frac{1}{8}+\frac{5}{7}=$
$\frac{8}{13}÷\frac{6}{13}=$ $\frac{2}{13}×\frac{3}{4}=$ $\frac{2}{3}×0.03=$
$\frac{5}{8}×\frac{2}{15}=$ $\frac{15}{28}÷\frac{2}{7}=$ $\frac{7}{16}-\frac{1}{4}=$
$\frac{5}{14}÷\frac{5}{8}=$ $\frac{9}{28}÷\frac{11}{12}=$ $2.25÷\frac{45}{8}=$
$5.4÷0.03=$ $8.6+32.3=$ $6.8+3.25=$
$4.8÷16=$ $1.6×40=$ $5.5×0.4=$
$58-5.8=$ $44×0.6=$ $726+595=$
$40.8÷2=$ $9.55-4.95=$ $81.6+0.4=$
$\frac{1}{4}÷\frac{3}{4}=$ $\frac{3}{8}×\frac{4}{7}=$ $\frac{1}{8}+\frac{5}{7}=$
$\frac{8}{13}÷\frac{6}{13}=$ $\frac{2}{13}×\frac{3}{4}=$ $\frac{2}{3}×0.03=$
$\frac{5}{8}×\frac{2}{15}=$ $\frac{15}{28}÷\frac{2}{7}=$ $\frac{7}{16}-\frac{1}{4}=$
$\frac{5}{14}÷\frac{5}{8}=$ $\frac{9}{28}÷\frac{11}{12}=$ $2.25÷\frac{45}{8}=$
答案
1. 180
2. 40.9
3. 10.05
4. 0.3
5. 64
6. 2.2
7. 52.2
8. 26.4
9. 1321
10. 20.4
11. 4.6
12. 82
13. $\frac{1}{3}$
14. $\frac{3}{14}$
15. $\frac{47}{56}$
16. $\frac{4}{3}$
17. $\frac{3}{26}$
18. $\frac{1}{50}$
19. $\frac{1}{12}$
20. $\frac{15}{8}$
21. $\frac{3}{16}$
22. $\frac{4}{7}$
23. $\frac{27}{77}$
24. $\frac{2}{5}$
2. 40.9
3. 10.05
4. 0.3
5. 64
6. 2.2
7. 52.2
8. 26.4
9. 1321
10. 20.4
11. 4.6
12. 82
13. $\frac{1}{3}$
14. $\frac{3}{14}$
15. $\frac{47}{56}$
16. $\frac{4}{3}$
17. $\frac{3}{26}$
18. $\frac{1}{50}$
19. $\frac{1}{12}$
20. $\frac{15}{8}$
21. $\frac{3}{16}$
22. $\frac{4}{7}$
23. $\frac{27}{77}$
24. $\frac{2}{5}$
二、计算下面各题,能简算的要简算。
$\frac{2}{5} - \frac{1}{9} ÷ \frac{8}{9} + \frac{3}{8}$
$\frac{4}{5} ÷ ( \frac{5}{6} × \frac{3}{5} ) - \frac{1}{2}$
$3 × ( \frac{15}{17} - \frac{3}{4} ) ÷ \frac{3}{4}$
$8.85 × 7.2 + 0.885 × 28$
$30.3 ÷ [ (1.3 + 1.2) × 0.6 ]$
$3.25 + 9.3 ÷ (2.3 + 3.9)$
$\frac{2}{5} - \frac{1}{9} ÷ \frac{8}{9} + \frac{3}{8}$
$\frac{4}{5} ÷ ( \frac{5}{6} × \frac{3}{5} ) - \frac{1}{2}$
$3 × ( \frac{15}{17} - \frac{3}{4} ) ÷ \frac{3}{4}$
$8.85 × 7.2 + 0.885 × 28$
$30.3 ÷ [ (1.3 + 1.2) × 0.6 ]$
$3.25 + 9.3 ÷ (2.3 + 3.9)$
答案
1. $\frac{13}{20}$
2. $\frac{11}{10}$
3. $\frac{9}{17}$
4. 88.5
5. 20.2
6. 4.75
2. $\frac{11}{10}$
3. $\frac{9}{17}$
4. 88.5
5. 20.2
6. 4.75
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