25X66十35X46一46怎样简便计算?

2025-03-24 06:15:57
推荐回答(2个)
回答1:

简便计算方法如下:

25×66+35×46-46

=66×25+35×25-1×25-21+35×21

=(66+35-1)×25+(35-1)×21

=100×25+34×21

=2500+34×(20+1)

=2500+34×20+34×1

=2500+680+34

=3214

回答2:

25×66+35×(66-20)-46
=25×66+35×66-35×20-46
=(25+35)×66-700-46
=60×66-700-46
=3960-746=3214