Question

2.2×6.6+2.4×3.4的简便计算是什么？

Answer 1

2.2×6.6+2.4×3.4
=2.2×6.6+（2.2+0.2）×3.4
=2.2×6.6+2.2×3.4+0.2x3.4
=2.2x（6.6+3.4）+0.68
=2.2x10+0.68
=22+0.68
=22.68

Answer 2

简便计算:
2.2×6.6+2.4×3.4
=2.2×6.6+(2.2+0.2)×3.4
=2.2×6.6+2.2×3.4+0.2×3.4
=2.2×(6.6+3.4)+0.68
=2.2×10+0.68
=22+0.68
=22.68

Answer 3

后面的2.4x3.4可以看成（2.2+0.2）x3.4
然后利用乘法分配律就可以了
原式= 2.2x6.6+（2.2+0.2）x3.4
= 2.2x6.6+2.2x3.4+0.2x3.4
= 2.2x（6.6+3.4）+0.2x3.4
= 2.2x10+0.68
= 22+0.68
= 22.68

Answer 4

2.2×6.6+2.4×3.4
=2.2x1.1x6+6x0.4x3.4
【提取6】
=6x(2.2x1.1+0.4x3.4)
=6x(2.42+1.36)
=6x3.78
=22.68

Answer 5

2.2×6.6+2.4×3.4的简便计算
=2.2*6.6+2.2*3.4+0.2*3.4=
2.2*（6.6+3.4）+0.68
=22.68