3.87除以4.3乘以(1.2+0.3)要求简算 怎么算?
问题描述:
3.87除以4.3乘以(1.2+0.3)要求简算 怎么算?
答
3.87÷4.3×(1.2+0.3)=3.87×1/4.3×1.2+3.87×1/4.3×0.3=1.08+0.27=1.35
答
3.87除以4.3乘以(1.2+0.3)
=[(4.3-0.43)/4.3]x1.5
=(1-0.1)x1.5
=1.5-0.15
=1.35