Question

怎样简便就怎样计算 5.6X3.9+0.44x39

Answer 1

用简便方法计算
5.6X3.9+0.44X39
=5.6Ⅹ3.9+4.4X3.9
=(5.6+4.4)X3.9
=10X3.9
=39

Answer 2

5.6×3.9+0.44×39
=5.6×3.9+4.4×3.9
=（5.6+4.4）×3.9
=10×3.9
=39