五分之二乘4加五分之二简便计算怎么算

问题描述:

五分之二乘4加五分之二简便计算怎么算

(2x4+2)/5

2/5×4+2/5
=2/5×4+2/5×1
=2/5×(4+1)
=2/5×5
=2

五分之二×4+五分之二
=五分之二×4+五分之二×1
=五分之二×(4+1)
=五分之二×5
=2

=2/5×(4+1)
=2/5×5
=2

五分之二乘4加五分之二
=2/5×(4+1)
=2/5×5
=2