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24.25*4+1.25*0.8怎么简便运算
人气:257 ℃ 时间:2020-03-23 21:58:23
解答
24.25×4+1.25×0.8
=24×4+0.25×4+1
=(25-1)×4+1+1
=100-4+2
=98
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