34×5×25×50怎么计算简便 =-=

问题描述:

34×5×25×50怎么计算简便 =-=

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