1.75×17+45×1.75+19×3.5,怎么巧算?
发布网友
发布时间：2024-12-03 14:43
共2个回答
热心网友
时间：2024-12-08 23:39
1.75×17+45×1.75+19×3.5
=1.75×17+45×1.75+38×1.75
=1.75×(17+45+38)
=1.75×100
=175
望采纳，谢谢
热心网友
时间：2024-12-08 23:39
1.75x17+45x1.75+19x3.5
=1.75(17+45)+19x3.5
=1.75x62+19x3.5
=1.75x2x31+19x3.5
=3.5(31+19)
=3.5x50
=175
