483+198用简便计算怎么算?ji
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483+198用简便计算怎么算?
ji
483+198=500+200-(17+2)=700-19=681
483+198=(500-17)+(200-2)=500+200-(17+2)=700-19=681
483+198用简便计算怎么算?
ji
483+198=500+200-(17+2)=700-19=681
483+198=(500-17)+(200-2)=500+200-(17+2)=700-19=681