脱式计算2.8×1.43+0.57×2.8能简算的要简算。

Question

脱式计算2.8×1.43+0.57×2.8能简算的要简算。

Answer 1

脱式计算2.8×1.43+0.57×2.8能简算的要简算。
解：采用分配律，
原式=2.8×1.43+0.57×2.8
=2.8x（1.43+0.57）
=2.8x2
=5.6

Answer 2

你好，很高兴为你解答

脱式计算
2.8×1.43+0.57×2.8能简算的要简算。
=2.8x(1.43+0.57)
=2.8x2
=5.6
满意采纳哦！本回答被网友采纳

Answer 3

2.8×1.43+0.57×2.8
=2.8×(1.43+0.57)
=2.8×2
=5.6

Answer 4

2.8×1.43+0.57×2.8
=2.8×（1.43+0.57）
=2.8×2
=5.6

Answer 5

2.8x（1.43+0.57）=2.8x2=5.6