暑假第一次测试

完成时间： 分钟 得分：

（满分：56分 考试时间：30分钟 每题4分）

一、有理数混合运算（共14题，每题4分）

1. 计算：$-7 + 15 - 9 + 3$

解：________________________________________________________________________________

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2. 计算：$(-2) \times (-5) - 3 \times 4$

解：________________________________________________________________________________

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3. 计算：$(-15) \div (-3) + (-12) \div 4$

解：________________________________________________________________________________

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4. 计算：$\left| -8 \right| + \left| -5 \right| - \left| -3 \right|$

解：________________________________________________________________________________

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5. 计算：$-(-5) + \left| -4 \right| - 6$

解：________________________________________________________________________________

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6. 计算：$(-2)^3$（并指出结果的符号）

解：________________________________________________________________________________

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7. 计算：$(-3)^2$（并比较它与$-3^2$的区别）

解：________________________________________________________________________________

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8. 计算：$(-2)^3 \times 3 + 4 \times (-5)$

    解：________________________________________________________________________________

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9. 计算：$-1^{4} + 6 \div (-2) \times \frac{1}{3}$

    解：________________________________________________________________________________

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10. 计算：$\left| {-6} \right| \times 3 - (-2)^3 \div \left| {-4} \right|$

    解：________________________________________________________________________________

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11. 计算：$-\left| {-3^2} \right| + (-3)^2 - (-2)^3$

    解：________________________________________________________________________________

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12. 计算：$(-2) - (-3) \times \left[ {4 - (-2)^2} \right] \div \left| {-5} \right|$

    解：________________________________________________________________________________

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13. 计算：$(-1)^{2025} + \left[ {(-2)^3 - \left| {-6} \right|} \right] \div 7$

    解：________________________________________________________________________________

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14. 计算：$-\left| {(-2)^2} \right| \times (-5) - \left| {-8} \right| \div \left| {-2} \right| + (-3)^3 \times 0$

    解：________________________________________________________________________________

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—— 试卷结束 ——