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230问答网 > 25乘69+75乘77该怎么简便计算？

25乘69+75乘77该怎么简便计算？

25乘69+75乘77

2025-04-07 21:02:42

推荐回答（5个）

回答1：

25*69+75*77=25*69+（25+50）*77=25*69+25*77+25*2*77=25*（69+77+154）=25*300=7500

回答2：

25×69+75×(69+8)=25×69+25×69+75×8=(25+75)×69+600=6900+600=7500

回答3：

25×69+75×77 =25×3×13+75×77 =75×(13+77)=75×90=6750

回答4：

25*69+75*77=25*(69+3*77)=25*3*(23+77)=75*100=7500

回答5：

25*69+75*77=75*(23+77)=75*100=7500

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