25×65-26×45,怎么简便运算?

2025-04-01 04:28:35
推荐回答(2个)
回答1:

简便计算
25×65-26×45
=25x65-25x45-45
=25x(65-45)-45
=25x20-45
=500-45
=455

回答2:

25×65-26×45
=25×65-25×45-45
=25×(65-45)-45
=25×20-45
=500-45
=465