有理数的加法新增

April 17, 2021, 7:34 a.m. 文档页面

【文章导读】1, 1- : ,7- 1-, ,,2,(), ,3, :, “+1” “-1” . :, . ,(+1)+(-1)=0,4, ,(-1)+(+1)=0, :,5,(1) :, 2 3 . ,(-2)+(-3),6,,,(-2)+

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【正文内容】

1,1:,71,,2,(),,3,:,“+1”“1”.:,.,(+1)+(1)=0,4,,(1)+(+1)=0,:,5,(1):,23.,(2)+(3),6,(2)+(3),=5,:,7,(2)(3)+2,=1,:,8,(3)3+(2),=1,:,9,(4)(4)+4,=0,:,10,:,(1)(2)+(3)=,0,1,2,1,2,3,4,5,5,11,:,(2)(3)+2=,0,1,2,1,2,3,4,5,1,12,(3)3+(2)=,0,1,2,1,2,3,3,1,:,13,:,(4)(4)+4=,0,1,2,1,2,3,4,5,0,14,(1)(2)+(3)=5,(2)(3)+2=1,(3)(+3)+(2)=1。

(4)(4)+4=0,0,.,15,.,.,0.0.,,16,:,(1)180+(10),(2)(10)+(1),(3)5+(5),(4)0+(2),,17,,(+5)+(2)=7()(5)+(2)=3()(5)+(+2)=7()(+5)+(2)=3().(),

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