5.6×12.5和0.58×9+0.58这两题怎么简便计算啊!
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/06 07:11:27
5.6×12.5和0.58×9+0.58这两题怎么简便计算啊!
5.6x12.5
=0.7x8x12.5
=0.7x100
=70
0.58x9+0.58
=0.58x(9+1)
=0.58x10
=5.8
=0.7x8x12.5
=0.7x100
=70
0.58x9+0.58
=0.58x(9+1)
=0.58x10
=5.8