《2025年名校题库七年级数学上册》

9. (高新区期末)计算:
(1)$2×[5+(-2)^{3}÷2]$;
(2)$-1^{4}-18×(-\frac {1}{3}+\frac {1}{6}-\frac {4}{9})$.

答案：
(1)2
(2)10

10. (石室联中)计算:
(1)$(-36)×(\frac {5}{9}-\frac {3}{4}-\frac {1}{18})$;
(2)$(-2)^{2}×7-6÷(-3)-(-1)^{2020}$.

答案：
(1)9
(2)29

11. (嘉祥)计算:
(1)$-0.5^{2}+\frac {1}{4}-|-3^{2}-9|-(-1\frac {1}{2})^{3}×\frac {16}{27}$;
(2)$-2^{2}-(-2)^{2}×0.25÷\frac {1}{2}$;
(3)$-1^{4}-(\frac {7}{12}-\frac {5}{6}+\frac {3}{2})×24+|-4|$.

答案：
(1)-16
(2)-6
(3)-27

12. (树德实验)计算:
(1)$-3^{2}-[(1\frac {1}{2})^{3}×(-\frac {2}{9})-6÷|-\frac {2}{3}|]$;
(2)$2×(-1\frac {3}{7})-2\frac {3}{4}×13+(-1\frac {3}{7})×5+\frac {1}{4}×(-13)$;
(3)$1+2\frac {1}{6}+3\frac {1}{12}+4\frac {1}{20}+5\frac {1}{30}+6\frac {1}{42}+7\frac {1}{56}+8\frac {1}{72}$.

答案：
(1)$\frac{3}{4}$
(2)-49
(3)$36\frac{7}{18}$