Describe two different methods to find the elapsed time from 2:30 p. M. To 2:58p. M.

You could just subtract 2:30 from 2:58 to get 28 minutes, or you could notice that 3:00 - 2:30 is 30 minutes, and since 3:00-2:58 = 2, subtract 2 from 30 to get 28 minutes. The second method is often easier if they are simple numbers you can do off the top of your head.

So, the different is:

2.30+28 = 2.58

The answer is 28 minutes