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一、填空题
1. $(-2)^3 =$
2. $-(-2^3) =$
3. $\frac{4}{9} × (-\frac{3}{2})^2 =$
4. $\frac{4}{9} ÷ (-\frac{3}{2})^2 =$
5. $-2^2 ÷ (-2)^2 =$
6. $(-\frac{1}{4})^2 × (-4^3) =$
7. $-5\frac{1}{5} - (-4\frac{1}{2}) × (-2)^2 =$
8. $-4\frac{1}{7} × (-7)^2 + (+3\frac{1}{2}) =$
1. $(-2)^3 =$
-8
2. $-(-2^3) =$
8
3. $\frac{4}{9} × (-\frac{3}{2})^2 =$
1
4. $\frac{4}{9} ÷ (-\frac{3}{2})^2 =$
$\frac{16}{81}$
5. $-2^2 ÷ (-2)^2 =$
-1
6. $(-\frac{1}{4})^2 × (-4^3) =$
-4
7. $-5\frac{1}{5} - (-4\frac{1}{2}) × (-2)^2 =$
$12\frac{4}{5}$
8. $-4\frac{1}{7} × (-7)^2 + (+3\frac{1}{2}) =$
$-199\frac{1}{2}$
答案
1. -8
2. 8
3. 1
4. $\frac{16}{81}$
5. -1
6. -4
7. $12\frac{4}{5}$
8. $-199\frac{1}{2}$
2. 8
3. 1
4. $\frac{16}{81}$
5. -1
6. -4
7. $12\frac{4}{5}$
8. $-199\frac{1}{2}$
9. [齐齐哈尔中考]我国年水资源总量约为27 500亿立方米，人均占有水量相当于世界人均的四分之一，居世界第110位. 将27 500用科学记数法表示为
$2.75×10^4$
.答案
9. $2.75×10^4$
二、计算题
10. $5 - 3 ÷ (-2^2)$
11. $(-3)^2 × (-\frac{3}{2})^2 × (\frac{2}{3})^2$
12. $-\frac{5}{6} ÷ (-\frac{5}{4}) × \frac{3}{2} - (-\frac{1}{2})^3$
13. $-18 ÷ 2\frac{1}{4} × \frac{4}{9} ÷ (-4^2)$
14. $1 + 2 ÷ (\frac{1}{6} - \frac{1}{3}) × (-\frac{1}{2})^2$
15. $5 × (-1^{217}) - (-4^3) × (-\frac{1}{4})$
16. $(-2)^3 × 0.5 - (-1.6)^2 ÷ (-2)^2$
17. $-(-2)^4 ×5 + 3^3 + (-2)^4 × (-1)^9$
10. $5 - 3 ÷ (-2^2)$
11. $(-3)^2 × (-\frac{3}{2})^2 × (\frac{2}{3})^2$
12. $-\frac{5}{6} ÷ (-\frac{5}{4}) × \frac{3}{2} - (-\frac{1}{2})^3$
13. $-18 ÷ 2\frac{1}{4} × \frac{4}{9} ÷ (-4^2)$
14. $1 + 2 ÷ (\frac{1}{6} - \frac{1}{3}) × (-\frac{1}{2})^2$
15. $5 × (-1^{217}) - (-4^3) × (-\frac{1}{4})$
16. $(-2)^3 × 0.5 - (-1.6)^2 ÷ (-2)^2$
17. $-(-2)^4 ×5 + 3^3 + (-2)^4 × (-1)^9$
答案
10. $5\frac{3}{4}$
11. 9
12. $1\frac{1}{8}$
13. $\frac{2}{9}$
14. -2
15. -21
16. -4.64
17. -69
11. 9
12. $1\frac{1}{8}$
13. $\frac{2}{9}$
14. -2
15. -21
16. -4.64
17. -69
