Question

2.2×12.5+6.8×12.5-12.5怎么用简便方法算？

Answer 1

2.2×12.5+6.8×12.5-12.5的简便运算为(2.2+6.8-1)×12.5=8×12.5=100。

Answer 2

简便计算
2.2×12.5+6.8×12.5-12.5
=（2.2+6.8-1）x12.5
=8x12.5
=10