28.6乘101-28.6能简便计算吗?能的话答案是什么 0.35乘1.25乘2乘0.8能简便计算吗?能的话答案是什么

问题描述:

28.6乘101-28.6能简便计算吗?能的话答案是什么 0.35乘1.25乘2乘0.8能简便计算吗?能的话答案是什么

能①28.6*101-28.6
=28.6*100 28.6-28*6
=2860
②0.35*1.25*2*0.8
=(0.35*2)*(1.25*0.8)
=0.7*1
=0.7

28.6×101-28.6
=28.6×(101-1)
=28.6×100
=2860
0.35×1.25×0.8
=0.35×(1.25×0.8)
=0.35×10
=3.5

28.6乘101-28.6
=28.6×(101-1)
=28.6×100
=2860
0.35乘1.25乘2乘0.8
=(0.35×2)×(1.25×0.8)
=0.7×1
=0.7.