Question

1.25×6+37×0.125的简便计算？

Answer 1

这道题的简便运算是先观察有没有同类因数，可以发现有1.25，所以可以把后面的因数改一下。具体步骤是：

1.25x6+3.7x1.25

=1.25x(6+3.7)

=1.25x9.7

=1.25x(10-0.3)

=1.25x10-1.25x0.3

=12.5-0.375

=12.125

简便运算法则

Answer 2

解：
1.25×6+37×0.125
=1.25×6+3.7×1.25
=1.25×(6+3.7)
=1.25×9.7
=12.125
或者1.25×9.7
=1.25×(10-0.3)
=1.25×10-1.25×0.3
=12.5-0.375
=12.125