Question

1.2×2.6+0.8×2.4可以简便运算吗？

Answer 1

1.2×2.6+0.8×2.4简算
解题思路:不能进行简便运算的按告态顺序计算,简便运算核心是运用加法晌李和袜谨源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:
1.2×2.6+0.8×2.4

=(0.8+1.3)×2.4

=2.1×2.4

=5.04

存疑请追问,满意请采纳

Answer 2

1.2*2.6+0.8*2.4=1.2（2.6+1.6）=1.2*4.2=1.2（4+0.2）=4.8+0.24=5.04

Answer 3

1.2×2.6+0.8×2.4
=1.2x(2.6+1.6)
＝1.2×4.2
=5.04