Question

用简便方法计算：1/2×3.2＋5.6×0.5＋1.2×50％

要写出计算过程

Answer 1

1/2×3.2＋5.6×0.5＋1.2×50％
=0.5*3.2+0.5*5.6+.5*1.2
=0.5*(3.2+5.6+1.2)
=0.5*10
=5

Answer 2

1/2×3.2＋5.6×0.5＋1.2×50％
=1/2(3.2+5.6+1.2)
=1/2*10
=5

Answer 3

提公因式0.5
0.5(3.2+5.6+1.2)=5

Answer 4

0.5*(3.2+5.6+1.2)=0.5*10=5