Question

2.7x23 2.7x14的巧算？

Answer 1

先提出公因式，然后再根据凑整法以及乘法分配率和乘法结合律计算即可。
具体做法：
2.7×23+2.7×1.4
=2.7×(23+14)
=2.7×37
=2.7×(40-3)
=2.7×40-2.7×3
=(3-0.3)×40-(3-0.3)×3
=3×40-0.3×40-3×3+0.3×3
=120-12-9+0.9
=120-20-1+0.9
=100-0.1
=99.9
希望对你有所帮助！

Answer 2

简便计算为
2.7*23+2.7*14
=2.7*（23+14）
=2.7*37
=91.8

Answer 3

2.7╳23+2.7ⅹ14
=2.7╳(23+14)
=2.7x37
=99.9

Answer 4

2.7×23
=（3-0.3）×23
=3×23-0.3×23
=69-6.9
=62.1
2.7×14
=（3-0.3）×14
=3×14-0.3×14
=42-4.2
=37.8

Answer 5

可以用结合律把2.7去乘14和23