Question

4.5x(0.3x0.2)+1.8怎么简便计算？

Answer 1

4.5x(0.3x0.2)+1.8简便计算
解题思路：不能进行简便运算的按顺序计算，简便运算核心是运用加法和乘法各种定律进行计算，计算出整数部分方便后续计算的过程
解题过程：

4.5×(0.3×0.2)+1.8

=4.5×0.2×0.3+1.8

=0.9×（0.3+2）

=1×2.3-0.1×2.3

=2.3-0.23

=2.07

存疑请追问，满意请采纳

Answer 2

原式=0.9*(5*0.2*0.3+2)
=0.9*2.3
=1*2.3-0.1*2.3
=2.3-0.23
=2.07

Answer 3

4.5×0.06+1.8=0.27+1.8=2.07

Answer 4

4.5×（0.3×0.2）+1.8
=4.5×0.2×0.3+1.8
=0.9×0.3+1.8
=0.27+1.8
=2.07