Question

31/25×99+31/25简便计算

Answer 1

31/25×99+31/25简便计算
31/25×99+31/25=31/25(99+1)=31/25x100=31x4=124

Answer 2

   31/25×99+31/25

=31/25×99+31/25×1     ...........改写

=31/25×（99+1）  ..........乘法的分配律合并

=31/25×100

=124

Answer 3

简便计算是直接提取公约数31/25得
31/25x99+31/25
=31/25x(99+1)
=31/25x100
=31x4
=124

Answer 4

31/25x99+31/25
=(31x99+31)/25
=31x(99+1)/25
=31x100/25
=31x4
=124

Answer 5

如下所示
31/25×99+31/25
=31/25×(99+1)
=31/25×100
=31×4
=124
望采纳，谢谢