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10 printable sets · answer key on every set

Elapsed Time Worksheets

  • CCSS 3.MD.A.1
  • 12 problems per set
  • Answer key included

What this skill is

Finding how much time passed between a start and an end, or the end time when you know the start and how long it lasted.

When it comes up: Third grade.

The mistake to watch for

Subtracting hours and minutes separately and getting stuck when the minutes pass 60. Jump to the next hour first.

How to help

Use a number line: jump to the next hour, then jump the whole hours, then add the leftover minutes.

Next: Time word problems.

A worked example

Practice starts at 3:15 and ends at 4:45. Jump from 3:15 to 4:15: that is 1 hour. Then from 4:15 to 4:45: 30 minutes. In all, practice lasted 1 hour 30 minutes.

Words to know

elapsed
Passed by. Elapsed time is how much time went by between two times.
hour
A length of time: 60 minutes. The short hand on a clock shows the hour.
minute
A length of time: 60 seconds. The long hand on a clock shows the minutes.
time
What a clock tells, like 3:15, or how long something takes.
clock
A tool that shows the time with an hour hand and a minute hand.

Practice

Find the end time or how long it lasted.

Showing Set 1 · 12 problems

  1. A movie starts at 7:45 and lasts 35 minutes. What time does it end?
  2. Practice starts at 3:45 and ends at 6:00. How long is practice?
  3. A movie starts at 5:35 and lasts 1 hour 55 minutes. What time does it end?
  4. A movie starts at 4:50 and lasts 1 hour 25 minutes. What time does it end?
  5. Practice starts at 7:25 and ends at 8:15. How long is practice?
  6. Practice starts at 6:45 and ends at 7:50. How long is practice?
  7. Practice starts at 3:30 and ends at 4:35. How long is practice?
  8. A movie starts at 7:00 and lasts 2 hours 30 minutes. What time does it end?
  9. Practice starts at 2:15 and ends at 5:30. How long is practice?
  10. Practice starts at 6:15 and ends at 6:35. How long is practice?
  11. A movie starts at 4:15 and lasts 2 hours 30 minutes. What time does it end?
  12. A movie starts at 5:50 and lasts 2 hours 50 minutes. What time does it end?

Download this set12 problems · answer key included PDF

Answer key
  1. 8:20
  2. 2 hours 15 minutes
  3. 7:30
  4. 6:15
  5. 50 minutes
  6. 1 hour 5 minutes
  7. 1 hour 5 minutes
  8. 9:30
  9. 3 hours 15 minutes
  10. 20 minutes
  11. 6:45
  12. 8:40

All 10 sets

Each set is a different list of 12 problems with its own answer key. Use the buttons above to look at one on this page, or download any of them as a PDF.

How these sheets were made
  • Problems are generated for each set and checked against 3.MD.A.1 before the sheet is built — no duplicates, and every problem falls inside the standard's number range.

Common Core State Standards © 2010 National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.