Question

1.37×22+13.7×7.8怎么简便运算？

Answer 1

答：简算过程如下：

1、提取原式：1.37×22+13.7×7.8

2、计算过程：

=1.37×22+1.37×78

=1.37 x ( 22+78 )

=1.37 x 100

=137

3、【计算结果】  137

Answer 2

1.37×22+13.7×7.8
=1.37×10×2.2+13.7×7.8
=13.7×2.2+13.7×7.8
=13.7×(2.2+7.8)
=13.7×10
=137