39+71= (-16)+(-23)=
(-18)+(-52)=29+60=
(-301)+(-75)= 30.1+7.99=
-125+301=(-6.14)+18.54=
46.14+(-26.5)= (-1/8)+(+0.6)=
1.125+(-17/5)=0.75+(-11/4)=
12又5/7+(-3/8)= (+5/9)+(-1/8)=
(+4/9)+(-3/5)= (-38)+52=
118+(-62)=(-32)+68=
21+(-151)=2.75+(-7 )=
[-(-0.5)]+4/5=[-(+17/5)]+[-(-1/8)]=
-(-32)+(-8)= -(-1.75)+3=
-(-0.19)+[-(-0.9)]=[-(+7/2)]+[-(+5/6)]=
(-23)+0=(-7.7)+0=
19.19+0= 0+[-(-1/4)]=
30個(gè)有理數(shù)加法,【6個(gè)同號(hào),14個(gè)異號(hào),6個(gè)相反數(shù),4個(gè)于0相加】?jī)蓚€(gè)數(shù)的.
30個(gè)有理數(shù)加法,【6個(gè)同號(hào),14個(gè)異號(hào),6個(gè)相反數(shù),4個(gè)于0相加】?jī)蓚€(gè)數(shù)的.
數(shù)學(xué)人氣:354 ℃時(shí)間:2020-04-11 10:37:17
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