Question

（40＋16）×25 简便计算

Answer 1

有两种简便方法：

1、（40+16）×25

=40×25+16×25

=4×25×10+4×25×4

=1000+400

=1400

2、（40+16）×25

=56×25

=4×25×14

=100×14

=1400