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1、精选优质文档-倾情为你奉上专心-专注-专业1. 23+(-73)=2. (-84)+(-49)=3. 7+(-2.04)=4. 4.23+(-7.57)=5. (-)+(-)=6. +(-)= 7. 3.75+(-2.25)+=8. -3.75+()+(-1.5)= 9.(-)+(-)+(+)+()=10. - = 11. -7 + = 12. 6 ( + )= 13. 8 - 8 =14. 31 =15. - ( )= 16. 18 14 =17. + = 18. 14 = 19. =20. 3 (- )+ =21. (- ) + = 22. + =23. (-) (- ) + =24. +
2、 =25.(-) +=26. 45 (-) + (-15) =27. (-) + (-) (-) =28. + =29. (-) (-) + =30. 101 21= 31. 50160(-40 )= 32. 120-14418+35= 33. (5.25+0.125+5.75)8= 34.(58+37)(64-95)= 35. 754.7+15.925= 36. 178-14556+42 =37. 812-700(9+3111)= 38. 34.58.23-34.5+2.7734.5= 39.(284+16)(512-820818)= 40. 272.46.2+27240.38=41.28.6767+3228.67+28.67=42. (6.8-6.80.55)8.5=43. 0.12 4.80.124.8=44. 2.894.68+4.686.11+4.68=45. 13.59.9+6.510.1= 46. 7.20.8-1.25= 47. 99.991.111.110.1=48. 10.15-10.750.4-5.7 =49. 0.88812573+9993= 50. 1998+199.8+19.98+1.998 =