Problem:
Greg wakes up at 5:20 a.m so that he will have time to prepare himself for school. At 6:00 a.m he is ready to go to school.how long does take him to prepare for school?

2:what operation will be needed to solve the problem?
Addition
Subtraction
Multiplication

3:what is the number sentence?
5:20 - 6:00 = n
6:00 + 5:20= n
6:00 - 5:20 = n

4:what is the anwer to the problem?
John prepares for school from 5:20 to 6:00
it takes 40 mins. For greg to prepare
it takes 20 mins. For greg to prepare​