一、口算。
$3.2÷0.04=$
$4.08+5.2=$
$12.5×8=$
$1.8×40=$
$1.9+4.01=$
$8.8÷0.11=$
$4÷0.25=$
$3.2×0.5=$
$1.2×0.8=$
$3.6-0.36=$
$4.2×3=$
$7÷0.35=$
$35÷\dfrac{5}{7}=$
$\dfrac{5}{8}-0.2=$
$36×(1+\dfrac{1}{9})=$
$100÷\dfrac{2}{3}=$
$2.5×\dfrac{4}{5}=$
$120×(1+\dfrac{3}{8})=$
$0.6+\dfrac{3}{7}=$
$\dfrac{8}{9}×\dfrac{6}{11}=$
$85-85×\dfrac{2}{5}=$
$0.4÷\dfrac{8}{9}=$
$5-\dfrac{1}{4}=$
$0.8+0.8×\dfrac{4}{5}=$
$3.2÷0.04=$
$4.08+5.2=$
$12.5×8=$
$1.8×40=$
$1.9+4.01=$
$8.8÷0.11=$
$4÷0.25=$
$3.2×0.5=$
$1.2×0.8=$
$3.6-0.36=$
$4.2×3=$
$7÷0.35=$
$35÷\dfrac{5}{7}=$
$\dfrac{5}{8}-0.2=$
$36×(1+\dfrac{1}{9})=$
$100÷\dfrac{2}{3}=$
$2.5×\dfrac{4}{5}=$
$120×(1+\dfrac{3}{8})=$
$0.6+\dfrac{3}{7}=$
$\dfrac{8}{9}×\dfrac{6}{11}=$
$85-85×\dfrac{2}{5}=$
$0.4÷\dfrac{8}{9}=$
$5-\dfrac{1}{4}=$
$0.8+0.8×\dfrac{4}{5}=$
答案
1. 80
2. 9.28
3. 100
4. 72
5. 5.91
6. 80
7. 16
8. 1.6
9. 0.96
10. 3.24
11. 12.6
12. 20
13. 49
14. $\dfrac{17}{40}$
15. 40
16. 150
17. 2
18. 165
19. $\dfrac{36}{35}$
20. $\dfrac{16}{33}$
21. 51
22. $\dfrac{9}{20}$
23. $4\dfrac{3}{4}$
24. $\dfrac{36}{25}$
2. 9.28
3. 100
4. 72
5. 5.91
6. 80
7. 16
8. 1.6
9. 0.96
10. 3.24
11. 12.6
12. 20
13. 49
14. $\dfrac{17}{40}$
15. 40
16. 150
17. 2
18. 165
19. $\dfrac{36}{35}$
20. $\dfrac{16}{33}$
21. 51
22. $\dfrac{9}{20}$
23. $4\dfrac{3}{4}$
24. $\dfrac{36}{25}$
二、计算下面各题,能简算的要简算。
$0.25÷\frac{11}{6}÷\frac{1}{4}$
$\frac{1}{7}×\frac{9}{16}+\frac{5}{16}÷7$
$(\frac{1}{6}+\frac{5}{8}÷\frac{3}{4})÷\frac{8}{5}$
$9.2×3.6÷15$
$7.8×1.17 - 7.8×0.17$
$4.9÷[2.6-(2.78 - 0.88)]$
$0.25÷\frac{11}{6}÷\frac{1}{4}$
$\frac{1}{7}×\frac{9}{16}+\frac{5}{16}÷7$
$(\frac{1}{6}+\frac{5}{8}÷\frac{3}{4})÷\frac{8}{5}$
$9.2×3.6÷15$
$7.8×1.17 - 7.8×0.17$
$4.9÷[2.6-(2.78 - 0.88)]$
答案
1. $\dfrac{6}{11}$
2. $\dfrac{1}{8}$
3. $\dfrac{5}{8}$
4. 2.208
5. 7.8
6. 7
2. $\dfrac{1}{8}$
3. $\dfrac{5}{8}$
4. 2.208
5. 7.8
6. 7
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