一、填空题(填“>”或“<”)
1. $\sqrt{5}$
2. $-\sqrt{3}$
3. $\sqrt{2}$
4. $-\sqrt{15}$
5. $2×\sqrt{3}$
6. $\sqrt{π}$
7. $\dfrac{\sqrt{3}}{4}$
8. $\dfrac{\sqrt{11}-3}{2}$
1. $\sqrt{5}$
>
22. $-\sqrt{3}$
<
03. $\sqrt{2}$
<
$1\dfrac{1}{2}$4. $-\sqrt{15}$
<
$-\sqrt{13}$5. $2×\sqrt{3}$
>
$\sqrt{10}$6. $\sqrt{π}$
<
$\sqrt{6}$7. $\dfrac{\sqrt{3}}{4}$
>
$\dfrac{π}{4}-1$8. $\dfrac{\sqrt{11}-3}{2}$
<
$\dfrac{\sqrt{7}}{2}$答案
1. >
2. <
3. <
4. <
5. >
6. <
7. >
8. <
2. <
3. <
4. <
5. >
6. <
7. >
8. <
二、用计算器计算(结果精确到0.01)
9. $\sqrt{5}-π$
10. $\sqrt{13}+\sqrt{3}$
11. $\sqrt{7}÷\sqrt{2}$
12. $\dfrac{22}{7}-\sqrt[3]{5}$
13. $\dfrac{\sqrt{11}}{5}-\sqrt{6}$
14. $2π+3×\sqrt{17}$
15. $3×\sqrt{8}-2×\sqrt[3]{9}+\sqrt{5}$
16. $\dfrac{\sqrt{3}}{2}-\sqrt{5}+3π-\sqrt{14}$
9. $\sqrt{5}-π$
10. $\sqrt{13}+\sqrt{3}$
11. $\sqrt{7}÷\sqrt{2}$
12. $\dfrac{22}{7}-\sqrt[3]{5}$
13. $\dfrac{\sqrt{11}}{5}-\sqrt{6}$
14. $2π+3×\sqrt{17}$
15. $3×\sqrt{8}-2×\sqrt[3]{9}+\sqrt{5}$
16. $\dfrac{\sqrt{3}}{2}-\sqrt{5}+3π-\sqrt{14}$
答案
9. -0.91
10. 5.34
11. 1.87
12. 1.43
13. -1.79
14. 18.65
15. 6.56
16. 4.31
10. 5.34
11. 1.87
12. 1.43
13. -1.79
14. 18.65
15. 6.56
16. 4.31
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