4700除以25乘以4怎么巧算?jjjjj
问题描述：
4700除以25乘以4怎么巧算?jjjjj
答
4700÷25×4
=4700÷(100÷4)×4
=4700÷100×4×4
=47×4×4
=188×4
=752