5.6*128+44*12.8,的简便算法该怎么算列脱式计算？

Question

如题所述

Answer 1

=128（5.6+44*0.1）
=128*10
=1280

Answer 2

5.6×128十44X12.8
=5.6×128十4.4X128
=（5.6+4.4）X128
=10X128
=1280

Answer 3

128*（5.6+4.4）
128*10
1280