Calculate DURATION OF TIME(Easy Way)

Calculation of time is a very complex thing in maths, specially for kids. This video is on calculating duration of time in an easy way. Just stop calculating time by counting on fingers or splitting into hours and minutes.If we have to calculate the duration between 11.45 and 12.20. We generally calculate minutes from 11.45 to 12 and then minutes from 12 to 12.20 and then adding both the answers.
This video describes a simple method of subtraction without adapting such complex calculations mentioned above. so please watch and give a subscribe, if you like.
And don't forget to watch our next video on finishing of time.