一、填空题(填“>”或“<”)
1. $\sqrt{11}$
2. $-\sqrt{5}$
3. $\sqrt{2}$
4. $-3.61$
5. $3×\sqrt{2}$
6. $\sqrt{9.1}$
7. $\sqrt{15}+2$
8. $\dfrac{\sqrt{13}-3}{3}$
1. $\sqrt{11}$
>
32. $-\sqrt{5}$
<
$-2$3. $\sqrt{2}$
<
1.4154. $-3.61$
<
$-\sqrt{13}$5. $3×\sqrt{2}$
<
$\sqrt{20}$6. $\sqrt{9.1}$
>
$\sqrt[3]{26.9}$7. $\sqrt{15}+2$
<
$\sqrt{65}-2$8. $\dfrac{\sqrt{13}-3}{3}$
<
$\dfrac{\sqrt{5}}{3}$答案
1. > 2. < 3. < 4. < 5. < 6. > 7. < 8. <
二、用计算器计算(结果精确到0.01)
9. $\sqrt{312}$
10. $\sqrt[3]{-0.843}$
11. $\sqrt{15}-2π$
12. $\sqrt{17}+\sqrt{3}$
13. $\sqrt{2π}×\sqrt[3]{16}$
14. $\sqrt[3]{34}×\sqrt{20}÷\sqrt{7}$
15. $\sqrt{3}-\dfrac{1}{3}×\sqrt{6}+\sqrt{15}$
16. $\sqrt[3]{26}÷\sqrt{3}-\dfrac{1}{4}×\sqrt{15}$
9. $\sqrt{312}$
10. $\sqrt[3]{-0.843}$
11. $\sqrt{15}-2π$
12. $\sqrt{17}+\sqrt{3}$
13. $\sqrt{2π}×\sqrt[3]{16}$
14. $\sqrt[3]{34}×\sqrt{20}÷\sqrt{7}$
15. $\sqrt{3}-\dfrac{1}{3}×\sqrt{6}+\sqrt{15}$
16. $\sqrt[3]{26}÷\sqrt{3}-\dfrac{1}{4}×\sqrt{15}$
答案
9. 17.66
10. -0.94
11. -2.41
12. 5.86
13. 6.32
14. 5.48
15. 4.79
16. 0.74
10. -0.94
11. -2.41
12. 5.86
13. 6.32
14. 5.48
15. 4.79
16. 0.74
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