Question

2.96乘40等于多少？用简便方法计算

Answer 1

2.96*40

=（3-0.04）*40

=3*40-0.04*40

=120-1.6

=118.4

如图所述：

先用3减去0.04括号，再乘40。然后拆掉括号里，分别乘以40，就得120。减去1.6，结果是118.4

Answer 2

 

Answer 3

 

Answer 4

=(3-0.04)×40

追答

=120-1.6=118.4

追问

3和0.04是怎么，来的

Answer 5

2.96x40=118.4