五分之三乘以6.8+3.2除以三分之五 (简算,式子)帮个忙

问题描述:

五分之三乘以6.8+3.2除以三分之五 (简算,式子)帮个忙

3/5×6.8+3.2÷5/3
=6.8×3/5+3.2×3/5
=3/5×(6.8+3.2)
=3/5×10
=6

五分之三乘以6.8+3.2除以三分之五
=6.8*3/5+3.2*3/5
=3/5*(6.8+3.2)
=3/5*10
=6