有理数速算.doc.doc

有理数速算
填空
1. -5+(-3)= ______ 2. -10+15=_______
3. -6-9=______ 4.(-5)-(-4)= ____
5. (-8)-8=____ 6. (-2)-(-2)=_____
7. 0-(-7)=____ 8. -(-)=____
9.(-)-(-)=____ 10.
11. (-)+(-)=______ 12. (-)-=____
13. (-4+7)-(2-8)=______ 14.(-3)+(-1)+(+3)+(-9)=___
16. --+= 17.-4+1-17=________
┃-8┃+┃-3┃= ______. 19.┃-10┃-┃-5┃=______
20. (-)÷(-1)=_______ 21. 5÷=_____
22.(-2)×3×5÷(-1)=_______ 23. (-54)÷.(-27)=______ 24.(-)×60=______ 25. -÷(-)×(-)=_______
(-10)·(-)·(-)=______ 29.(-)÷=______
(+24)÷(-6)=______ 31. (-)×(-)=_______
32. (-5)×(-6)×3×(-2)=_____ 33. 24÷3÷(-2)=______
34. (-)÷(-1)×=______ 35. -× (0÷)=_______
36.(-5)÷(-1)=_______ 37. 0÷99×(-3)÷7=________
38.(-)×(-8)·(+)·(-4)=________
39.(-2)×5×(-7)×(-)=_______ 40. (-81)÷×=________
41.(-1)2003= ___________ 44 . -[-(-2)2]2=______
45. 25·(-3)2=_________ 46. (-2)2·(-3)3=________
47. (-1)×33=_______ 48.(-2)3×()9×010×(-3)5=_______
50.(-1)2-23=__________ 52.-2×5=
二计算:
⒈-+(-)-(-)- ⒉×(-)×÷
⒊ 1-2+3-4+5-6+…+99-100 ⒋-20+8÷(-2)2-(-4)×(-3)
⒌(-48)÷8-(-25)(-6) 6. ×(-)÷(-2)
⒏ 42×(-)+(-)÷(-) ⒐ 2×(-3)3-4×(-3)+25
⒑-24+(3-7)2-21 ⒒-12-×[2-(-3)2]
⒔-3×23-(-3×2)3 ⒖-5×(-3)+(-7)×(-3)+12×(-3)
⒙-32-(-2)3-÷()3
⒚-0.