1/4×0.75+0.25×3/8+25%×1/8

问题描述:

1/4×0.75+0.25×3/8+25%×1/8

原式=1/4×0.75+(0.25×3/8+0.25×1/8)
=1/4×0.75+0.25×(3/8+1/8)
=1/4×3/4+1/4×1/2
=1/4×(3/4+2/4)
=1/4×5/4=5/16