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一、填空题(结果精确到0.01)
1. $π×\sqrt{3}\approx$
2. $2×\sqrt{8}-3π\approx$
3. $\sqrt{5}-\sqrt[3]{6}\approx$
4. $\sqrt{11}+\sqrt{2}\approx$
5. $\sqrt[3]{5}-\sqrt{3}\approx$
6. $π-2×\sqrt{5}\approx$
7. $\sqrt[3]{6+π}\approx$
8. $\frac{\sqrt[3]{7}}{π}\approx$
1. $π×\sqrt{3}\approx$
5.44
2. $2×\sqrt{8}-3π\approx$
-3.77
3. $\sqrt{5}-\sqrt[3]{6}\approx$
0.42
4. $\sqrt{11}+\sqrt{2}\approx$
4.73
5. $\sqrt[3]{5}-\sqrt{3}\approx$
-0.02
6. $π-2×\sqrt{5}\approx$
-1.33
7. $\sqrt[3]{6+π}\approx$
2.09
8. $\frac{\sqrt[3]{7}}{π}\approx$
0.61
答案
1. 5.44
2. -3.77
3. 0.42
4. 4.73
5. -0.02
6. -1.33
7. 2.09
8. 0.61
2. -3.77
3. 0.42
4. 4.73
5. -0.02
6. -1.33
7. 2.09
8. 0.61
二、计算题
9. $4×π - 2×(1 - 2×π)$
10. $3×(4×\sqrt{11}) -12×\sqrt{11}$
11. $(-3)×(\sqrt{2} -3)+3×\sqrt{2}$
12. $\frac{3}{2}×(2×\sqrt{15})+\sqrt{16}-3×\sqrt{15}$
13. $2×\sqrt{196}+\sqrt[3]{-343}$
14. $2 - (\frac{1}{2}×\sqrt{11} +10) + \frac{1}{2}×\sqrt{11}$
15. $\sqrt{16} + (-1)^2 - \sqrt[3]{27} +8×(-\frac{1}{2})$
16. $\sqrt{25} - (-\frac{1}{2})^3×16 + \sqrt[3]{(-\frac{3}{4})^3} ÷ \left|\frac{1}{16}\right|$
9. $4×π - 2×(1 - 2×π)$
10. $3×(4×\sqrt{11}) -12×\sqrt{11}$
11. $(-3)×(\sqrt{2} -3)+3×\sqrt{2}$
12. $\frac{3}{2}×(2×\sqrt{15})+\sqrt{16}-3×\sqrt{15}$
13. $2×\sqrt{196}+\sqrt[3]{-343}$
14. $2 - (\frac{1}{2}×\sqrt{11} +10) + \frac{1}{2}×\sqrt{11}$
15. $\sqrt{16} + (-1)^2 - \sqrt[3]{27} +8×(-\frac{1}{2})$
16. $\sqrt{25} - (-\frac{1}{2})^3×16 + \sqrt[3]{(-\frac{3}{4})^3} ÷ \left|\frac{1}{16}\right|$
答案
9. 8π-2
10. 0
11. 9
12. 4
13. 21
14. -8
15. -2
16. -5
10. 0
11. 9
12. 4
13. 21
14. -8
15. -2
16. -5
