5.2*6.4+0.48*6.4 简便计算
问题描述：
5.2*6.4+0.48*6.4 简便计算
答
5.2×6.4+0.48×6.4
=(5.2+0.48)×6.4
=5.68×6.4
=36.352
看了追问,知道楼主的题目出错了.
5.2×6.4+0.48×64
=5.2×6.4+4.8×6.4
=(5.2+4.8)×6.4
=10×6.4
=64