89十89x47的简便方法怎么做
答案:4 悬赏:50 手机版
解决时间 2021-11-28 11:49
- 提问者网友:末路
- 2021-11-28 05:37
89十89x47的简便方法怎么做
最佳答案
- 五星知识达人网友:轻雾山林
- 2021-11-28 06:06
89+89*47
=89*(47+1)
=89*48
=4272
=89*(47+1)
=89*48
=4272
全部回答
- 1楼网友:胯下狙击手
- 2021-11-28 08:31
89+89*47
=89*1+89*47
=89*(1+47)
=89*48
=(90-1)*48
=90*48-48
=4320-48
=4272
=89*1+89*47
=89*(1+47)
=89*48
=(90-1)*48
=90*48-48
=4320-48
=4272
- 2楼网友:空山清雨
- 2021-11-28 08:00
89十89x47
=89x(47+1)
=89x48
=(90-1)x48
=4320-48
=4272
=89x(47+1)
=89x48
=(90-1)x48
=4320-48
=4272
- 3楼网友:逐風
- 2021-11-28 06:55
89+89x47
=89x(47+1)
=(90-1)x48
=90x48-48
=90x(50-2)-48
=90x50-90x2-(50-2)
=4500-180-50+2
=4320-50+2
=4270+2
=4272
谢谢,请采纳
=89x(47+1)
=(90-1)x48
=90x48-48
=90x(50-2)-48
=90x50-90x2-(50-2)
=4500-180-50+2
=4320-50+2
=4270+2
=4272
谢谢,请采纳
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