计算下面各题,能简便的要简算1.485-720/(15*12) 2.8*(48分一+125) 3.18*10.2
问题描述:
计算下面各题,能简便的要简算1.485-720/(15*12) 2.8*(48分一+125) 3.18*10.2
答
1.485-720/(15*12)
=485-4
=481
2.8*(48分一+125)
=8*1/48+8*125
=1000+1/6
3.18*10.2
=18*(10+0.2)
=18*10+18*0.2
=180+3.6
=183.6