登录
一、填空题
1. $4-(-\sqrt{1})+9=$
2. $(-15)-18+\sqrt{49}=$
3. $(-23)+\sqrt{64}+(-37)=$
4. $(-6)+(-\sqrt{9})+6+5=$
5. $6-8+\sqrt{144}-12=$
6. $-2\dfrac{2}{5}×(-\sqrt{2.25})×\dfrac{1}{4}=$
7. $(-4)-(-2)÷\dfrac{1}{3}-\sqrt{144}÷(-3)=$
8. $6-(-2)^2÷4×\sqrt{49}=$
1. $4-(-\sqrt{1})+9=$
14
2. $(-15)-18+\sqrt{49}=$
-26
3. $(-23)+\sqrt{64}+(-37)=$
-52
4. $(-6)+(-\sqrt{9})+6+5=$
2
5. $6-8+\sqrt{144}-12=$
-2
6. $-2\dfrac{2}{5}×(-\sqrt{2.25})×\dfrac{1}{4}=$
0.9
7. $(-4)-(-2)÷\dfrac{1}{3}-\sqrt{144}÷(-3)=$
6
8. $6-(-2)^2÷4×\sqrt{49}=$
-1
答案
1. 14 2. -26 3. -52 4. 2 5. -2 6. 0.9 7. 6 8. -1
二、计算题
9. $\sqrt{25} × (\sqrt{25} - 2) + \sqrt{25}$
10. $(-23) ÷ (-3) × \sqrt{\dfrac{1}{9}}$
11. $\dfrac{1}{4} ÷ [(-7) + \sqrt{\dfrac{1}{16}} - (-6\dfrac{1}{2})]$
12. $(-\dfrac{7}{4}) ÷ \dfrac{7}{8} - \sqrt{\dfrac{4}{9}} × (-6)$
13. $1\dfrac{3}{5} × (-3\dfrac{3}{4}) ÷ [(-1\dfrac{2}{3}) × (-\sqrt{\dfrac{9}{25}})]$
14. $-1^4 × (-\dfrac{3}{8}) - (-3^2) × (-\sqrt{\dfrac{9}{64}})$
15. $[(-2) × (-4) + (-\sqrt{25}\ )] × [(-3) - (-3) × \sqrt{(-2)^2}\ ]$
9. $\sqrt{25} × (\sqrt{25} - 2) + \sqrt{25}$
10. $(-23) ÷ (-3) × \sqrt{\dfrac{1}{9}}$
11. $\dfrac{1}{4} ÷ [(-7) + \sqrt{\dfrac{1}{16}} - (-6\dfrac{1}{2})]$
12. $(-\dfrac{7}{4}) ÷ \dfrac{7}{8} - \sqrt{\dfrac{4}{9}} × (-6)$
13. $1\dfrac{3}{5} × (-3\dfrac{3}{4}) ÷ [(-1\dfrac{2}{3}) × (-\sqrt{\dfrac{9}{25}})]$
14. $-1^4 × (-\dfrac{3}{8}) - (-3^2) × (-\sqrt{\dfrac{9}{64}})$
15. $[(-2) × (-4) + (-\sqrt{25}\ )] × [(-3) - (-3) × \sqrt{(-2)^2}\ ]$
答案
9. 20 10. $\dfrac{23}{9}$ 11. -1 12. 2 13. -6 14. -3 15. 9
