25 加75×5简便运算过程?

2024-11-16 11:26:47
推荐回答(1个)
回答(1):

25+75×5
=25+(25×3)×5
=25+25×(3×5)
=25+25×15
=25×(1+15)
=25×16
=25×(4×4)
=(25×4)×4
=100×4
=400