《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. $(-45)÷3=$-15
2. $33×(-4)=$-132
3. $(-\frac {12}{25})÷\frac {3}{5}=$$-\frac{4}{5}$
4. $-3÷6×\frac {1}{6}=$$-\frac{1}{12}$
5. $(-8)×[(+\frac {3}{4})+(-6)]=$42
6. $[(+\frac {7}{10})+(-\frac {1}{2})]÷(-\frac {1}{20})=$-4
7. $(-0.125)×($-8$)= 1$
8. $1.25÷(-0.5)÷(-2\frac {1}{2})×1=$1

答案： 1. -15 2. -132 3. $-\frac{4}{5}$ 4. $-\frac{1}{12}$ 5. 42 6. -4 7. -8 8. 1

二、计算题
9. $(-18)×[(+\frac {1}{3})÷(-\frac {1}{9})]$
10. $-0.25÷(-\frac {2}{3})×(-1\frac {3}{5})$
11. $(-2\frac {4}{7})×(-1\frac {5}{6})÷(-1\frac {1}{21})$
12. $1\frac {2}{5}×(\frac {1}{3}-\frac {1}{2})×3\frac {3}{7}÷\frac {4}{5}$
13. $-3.5÷\frac {7}{8}×(-\frac {8}{7})×|-\frac {3}{64}|$
14. $(+1)×(+2)×... ×(+202)×(+203)×(-\frac {1}{203})×(-\frac {1}{202})×... ×(-\frac {1}{2})×(-1)$

答案： 9. 54 10. $-\frac{3}{5}$ 11. $-\frac{9}{2}$ 12. -1 13. $\frac{3}{14}$ 14. -1