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4.23x4.6+4.6x5.77脱式计算怎么写?

4.23x4.6+4.6x5.77 =4.6x(4.23+5.77) =4.6x10 =46 望采纳,谢谢!

99×187+187 =(99+1)×187 =99×100 =9900

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