Question

0.25*6.72+0.5*3.28简便方法？

Answer 1

简算：
0.25×6.72+0.5×3.28
=0.25×6.72+0.25×3.28+0.25×3.28
=0.25×(6.72+3.28)+0.25×3.28
=0.25×10+0.82
=2.5+0.82
=3.32

Answer 2

简便计算方法如下：
0.25×6.72+0.5×3.28
=0.25×6.72+（0.25×3.28+0.25×3.28）
=0.25×6.72+0.25×3.28+3.28÷4
=0.25×（6.72+3.28）+0.82
=0.25×10+0.82
=3.32

Answer 3

拆分一下，0.25*6.72+0.5*3.28＝
0.25*3.36*2+0.5*3.28＝
0.5*3.36+0.5*3.28＝0.5*(3.36+3.28)＝0.5*6.64＝3.32

Answer 4

此题简便方法为：拆公式为0.25*4*1.68+0.5*2*1.64=1.68+1.64=3.32。

Answer 5

第一种：
0.25*6.72+0.5*3.28
=0.25*6.72+0.25*2*3.28
=0.25*（6.72+2*3.28）
=0.25*（6.72+3.28+3.28）
=0.25*13.28
=3.32
另外一种：
=0.5*（6.72/2）+0.5*3.28
=0.5*3.36+0.5*3.28
=0.5*（3.36+3.28）
=6.64÷2
=3.32