22.5×0.68+2点75×6.8如何简便?
3个回答
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回答:
22.5×0.68+2.75×6.8
=2.25×10×0.68+2.75×6.8
=2.25×6.8+2.75×6.8
=(2.25+2.75)×6.8
=5×6.8
=34
运用了乘法分配律
22.5×0.68+2.75×6.8
=2.25×10×0.68+2.75×6.8
=2.25×6.8+2.75×6.8
=(2.25+2.75)×6.8
=5×6.8
=34
运用了乘法分配律
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22.5×0.68+2.75×6.8
=22.5×0.68+27.5×0.68
=(22.5+27.5)×0.68
=50×0.68
=34
=22.5×0.68+27.5×0.68
=(22.5+27.5)×0.68
=50×0.68
=34
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展开全部
22.5×0.68+2.75×6.8
=(2.25+2.75)×6.8
=5×6.8
=34
=(2.25+2.75)×6.8
=5×6.8
=34
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评论
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