34×5×25×50怎么计算简便 =-= - 知识问答

34×5×25×50怎么计算简便 =-=

2个回答

34×5×25×50
=17×2×5×25×50
=17×(2×5)×25×50
=17×25×500
=(16+1)×25×500
=16×25×500+1×25×500
=4×4×25×500+1×25×500
=200000+12500
=212500

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