《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. $-1-(-2)+3=$4 2. $(-5)-(-4)+(-2)=$-3
3. $(+3)-(+5)+(-1)=$-3 4. $0-4-(-5)-(-6)=$7
5. $(-11)-(-7.5)-(+9)+2.5=$-10
6. $-15-(-\frac {3}{4})+7-|-0.75|=$-8
7. $\frac {10}{3}+(-\frac {11}{4})-(-\frac {5}{6})+(-\frac {7}{12})=$$\frac{5}{6}$
8. $-20.15-18+2.15+(-8)=$-44

答案： 1. 4 2. -3 3. -3 4. 7 5. -10 6. -8 7. $\frac{5}{6}$ 8. -44

二、计算题
9. $-7+6+9-8-5$ 10. $(+6)-(+12)+(+8.3)-(+7.4)$
11. $(-12)-(-\frac {6}{5})+(-8)-\frac {7}{10}$ 12. $(-2\frac {5}{13})-(-15.5)+(-7\frac {8}{13})+(-5\frac {1}{2})$
13. $(-0.5)-(-3\frac {1}{4})+3.75-(+\frac {1}{2})$ 14. $(-\frac {1}{3})-(-\frac {2}{5})+(+\frac {3}{5})-(+1\frac {2}{3})$
15. $1\frac {3}{4}+(-6.25)-(-\frac {3}{8})-1.75$ 16. $|-2\frac {1}{2}|-(-2.5)+1-|1-2\frac {1}{2}|$

答案： 9. -5 10. -5.1 11. $-\frac{39}{2}$ 12. 0 13. 6 14. -1 15. $-\frac{47}{8}$ 16. 4.5