递等式计算能巧算的要巧算 0.8*(4-3.75)/0.1 4.8*1.25*0.25 9.5*4.8-4.8*5 14.75/8/1.25

0.8*(4-3.75)/0.1
=8*0.25
=2
4.8*1.25*0.25
=6*（0.8*1.25）*0.25
=1*1.5
=1.5
9.5*4.8-4.8*5
=4.8*（9.5-5）
=4.8*4.5
=（5-0.2）*4.5
=5*4.5-0.2*4.5
=22.5-0.9
=21.6
14.75/8/1.25
=14.75/（8*1.25）
=14.75/10
=1.475