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1 .计算下列各题.(1)(-61)-(+87)-(-82)-(-67)(2)54-(-46)-(-55)-69(3) 88-(-40)-(-13)-(85)(4)(-19)-34-(+69)-(-82)(5)(+32)-(-21)-(+14)-(-57)(6)(-24)-(+82)-(-23)-(-63)2 .计算下列习题.(1) (+56)-(-33)-(+91)-(-52)-(19)参考答案:1 .计算下列各题.(1)1(2)86(3)30(4)-136(5)124(6)-1462 .计算下列习题.(1)251(2)-951 .计算下列各题.(1)(-31)-(+72)-(-85)-(-28)(2)37-(-38)-(-85)-22(3) 50-(-64)-47)-(+34)(4)(-117)-53-(+12)-(-22)(5)(+95)-(-75)-(+15)-(-33)(6)(-44)-(+77)-(-23)-(-64)2 .计算下列习题.(1) (102)-(-29)-(28)-(-21)-(+64)参考答案:1 .计算下列各题.(1)10(2)138(3)33(4) -98(5)218(6)-1622 .计算下列习题.(1)244(2)-95