4.4x0.8+3.4×0.8用简便计算怎么算?

2024-12-03 02:07:13
推荐回答(3个)
回答1:

=(4.4+3.4)×0.8
=7.8×0.8
=(8-0.2)×0.8
=8×0.8-0.2×0.8
=6.4-0.16
=6.24

回答2:

原式可化为:(4.4+3.4)x0.8=7.8x0.8=6.24

回答3:

原式=0.8x(4.4+3.4)
=0.8x7.8
=0.8x7+0.8x0.8
=5.6+0.64
=6.24