2-4 回家作業 ___ 年 ____ 班 ____ 號 姓名: _____________
計算下列題目(每格4分):
1. 4=____________
2. (-1)=____________
3. [(-)]=____________
4. (-)(-4)(-)=____________
5. -1的倒數:____________
6. -的相反數與其倒數的乘積為 ____________
7. (-1)÷6÷(-2)=____________
8. (-1)5==____________;
其中□=____________
9. (-)=____________
10. ()3÷()4=____________
11. 2化為小數=____________
12. -11.625化為分數=____________
13. 6.2×5÷(-0.62)=____________
14. (-6.2)10÷0.31=____________
15. (-)(-)÷(-1)
=____________
16. (-0.75)÷(-1.125)
=____________
17. 2-(-)=____________
18. (-3)÷(-2)2-2(-1)3
=____________
19. [(-2)÷()3-]÷()2=____________
20. (-19)+(-41)+14
=____________
21. 18756+(-56)87
=____________
22. (1-)(-)=____________
23. 2008=____________
24. 19210.911-9210.911+19210.089
-9210.089=____________