《2025年通城学典初中数学运算能手七年级上册人教版》

一、填空题
1. $\frac {81}{-9}=$-9 2. $\frac {-48}{-15}=$$\frac{16}{5}$
3. $(-\frac {5}{6})÷(-3)×(-9)=$$-\frac{5}{2}$ 4. $12÷(-\frac {1}{3})×\frac {1}{4}=$-9
5. $12×(-\frac {1}{8})÷(-\frac {1}{4})=$6 6. $9×(-\frac {1}{3})÷(-0.3)=$10
7. $(-\frac {5}{6})×(-1\frac {4}{5})÷(-\frac {1}{2})=$-3 8. $-3\frac {1}{2}÷1\frac {3}{4}×(-8)=$16

答案： 1. -9 2. $\frac{16}{5}$ 3. $-\frac{5}{2}$ 4. -9 5. 6 6. 10 7. -3 8. 16

二、计算题
9. $(-3)÷(-\frac {2}{3})×(-\frac {4}{9})$ 10. $-0.75×(-0.4)÷\frac {3}{5}$
11. $(-\frac {5}{6})÷(-3)×(-1\frac {4}{5})$ 12. $\frac {2}{7}÷(-\frac {3}{5})×(-\frac {9}{5})÷(-3\frac {1}{2})$
13. $(-\frac {3}{17})×(-\frac {5}{4})÷9×(-3\frac {2}{5})$ 14. $2\frac {1}{4}×(-4)×4\frac {2}{5}÷(-2\frac {1}{5})$
15. $(-\frac {3}{5})×(-3\frac {1}{2})÷(-1\frac {1}{4})÷3$ 16. $3÷(-\frac {1}{6})×(-\frac {1}{2})÷9$

答案： 9. -2 10. $\frac{1}{2}$ 11. $-\frac{1}{2}$ 12. $-\frac{12}{49}$ 13. $-\frac{1}{12}$ 14. 18 15. $-\frac{14}{25}$ 16. 1