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116问答网 > 23×45+78×45-45等于多少脱式计算简便运算？

23×45+78×45-45等于多少脱式计算简便运算？

2025-03-15 17:28:47

推荐回答（3个）

回答1：

23X45+78X45-45
=(23+78-1)X45
=100X45
=4500

回答2：

原式=45*(23+78-1)
=45*100
=4500

回答3：

＝(23+78-1)*45

＝100*75

＝7500

七千五百

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