6.8乘25分之8+3.2乘0.42-16除以50=
问题描述:
6.8乘25分之8+3.2乘0.42-16除以50=
答
=6.8×0.32+0.32×4.2-0.32
=0.32×(6.8+4.2-1)
=0.32×10
=3.2