1,Tran started his homework at 8.15pm and completed it at 9.08pm._其他解答

1,Tran started his homework at 8.15pm and completed it at 9.08pm.If he had allowed one hour to do his homework,what fraction of that time did he use?
2,Vijay has 95cm of rope.He cut 3 pieces from it,each 30 cm long.What fraction of the rope remained?

人气：207 ℃　时间：2020-05-20 12:35:51

解答

1.他从8：15开始做作业,到9：08分做完.如果给他的时间是一个小时,那他实际花的时间是1小时的几分之几?
9：08-8：15＝53（分）
实际是一小时的53/60
2.Vijay有根95厘米长的绳子.他切下来3段,每段都是30厘米长.那绳子还剩下几分之几?
（90-3*30）/95＝5/95＝1/19
还剩下1/19