Elapsed Time

Find how long, when it ends, or when it started.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 60

Elapsed time is how much time goes by. A timeline helps. The bus leaves at 7:00 a.m. and the ride takes 45 minutes. When does it get to school?
Jump 30 minutes to 7:30, then 15 more to 7:45. The bus gets to school at 7:45 a.m.
Ava got to the park at 2:30 p.m. and left at 3:45 p.m. Jump 1 hour to 3:30, then 15 minutes to 3:45. Ava was there 1 hour 15 minutes.
A movie ends at 5:00 p.m. and lasts 1 hour 45 minutes. Jump back from 5:00: 1 hour to 4:00, 30 minutes to 3:30, 15 minutes to 3:15. It started at 3:15 p.m.

Georgia's K-12 Mathematics Standards:

3.MDR.5.3 — Solve meaningful problems involving elapsed time, including intervals of time to the hour, half hour, and quarter hour where the times presented are only on the hour, half hour, or quarter hour within a.m. or p.m. only.