2.3×1.2+2.5能简便计算吗?

2025-03-17 19:26:16
推荐回答(3个)
回答1:

2.3x1.2+2.5=2.3x(1+0.2)十2.5=2.3x1+2.3x0.2+2.5=2.3+0.46+2.5=4.8+0.46=5.26

回答2:

2.3×1.2+2.5
=2.3×(1+0.2)+2.5
=2.3x1+2.3x0.2+2.5
=2.3+0.46+2.5
=5.26

回答3:

根据数字的特点不可以的,