1.4 (-10)+(+6)=6-10=-42.8 (+12)+(-4)=+(12-4)=83.-12 (-5)+(-7)=-(5+7)=-124.-3 (+6)+(-9)=6-9=-35.-3.6 (-0.9)+(-2.7)=-(0.9+2.7)=-3.66.-五分之一 五分之二+(-五分之三)=五分之二-五分之三=-五分之...
有理数的加法练习题(1) (-10)+(+6)(2) (+12)+(-4)(3) (-5)+(-7)(4) (+6)+(
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有理数的加法.今晚就要 ,1.(-3)+(+7)+4+(+3)+(-5)+(-4)=?2.(+66)+(-12)+(+1
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