Question

10.1×7.5-0.75的简便计算

Answer 1

这道题简便计算过程如下：10.1×7.5－0.75＝10.1×7.5－7.5×0.1＝7.5×(10.1－0.1)=7.5×10＝75，该题主要考查乘法分配律的在简算中应用，在计算中常用加法交换律，加法结合律，乘法交换律，乘法结合律，乘法分配律使计算简便。

Answer 2

简便算法得，10.1变成10+0.1
(10+0.1)×7.5-0.75乘法分配律得
=10×7.5+0.1×7.5-0.75
=75+0.75-0.75
=75

Answer 3

10.1×7.5-0.75的简便计算
10.1×7.5-0.75
=101×0.75-0.75
=0.75×(101-1)
=0.75×100
=75

Answer 4

10.1×7.5-0.75
=10.1×7.5-0.1×7.5
=（10.1-0.1）×7.5
=10×7.5
=75

Answer 5

解：原式= (10 + 0.1) * (0.75 * 10) - (0.75 * 1)
= 10 * 7.5 + (0.1 * 10 * 0.75) - (0.75 * 1)
=75