Question

2.5×68十2.5×33一2.5,简便运算？

2.35乘68加33乘二点35-2点三五，简便计算

Answer 1

可以利用乘法分配律。
2.5×68+2.5×33-2.5
=2.5×68+2.5×33-2.5×1
=2.5×（68+33-1）
=2.5×100
=250

Answer 2

2.5×68十2.5×33一2.5
=2.5x(68+33-1)
=2.5x100
=250。
2.35×68十33x2.35一2.35
=2.35x(68+33-1)
=2.35x100
=235。

Answer 3

2.5×68十2.5×33一2.5
=2.5*(68+33-1)
=2.5*100
=250

Answer 4

2.5×68十2.5×33一2.5
=2.5×（68+33-1）
=2.5×100
=250