Elapsed Time — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 45 minutes after 2:15 is 3:00.
15 plus 45 equals 60, rolling to the next hour.
2. Jake ran from 3:15 to 3:50. He ran for 35 minutes.
50 minus 15 gives 35 minutes of running.
3. 30 minutes after 7:45 is 8:15.
45 plus 30 is 75, so next hour plus 15.
4. From 1:10 to 1:55 is 45 minutes elapsed.
55 minus 10 equals 45 minutes elapsed.
5. Maya started reading at 4:20 and read 20 minutes. She stopped at 4:40.
20 plus 20 equals 40 minutes past 4.
6. 15 minutes after 9:50 is 10:05.
50 plus 15 is 65, so next hour plus 5.
7. From 6:30 to 7:00 is 30 minutes.
30 more minutes reach the top of the hour.
8. Sam played from 5:05 to 5:35. He played 30 minutes.
35 minus 5 leaves 30 minutes played.
9. 25 minutes after 8:20 is 8:45.
20 plus 25 equals 45 minutes past 8.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Start 2:15, duration 30 min. End time?
→ 2:45
2:45
Start 4:10, end 4:50. Duration?
→ 40 minutes
40 minutes
Start 6:00, duration 45 min. End time?
→ 6:45
6:45
Start 9:20, end 9:35. Duration?
→ 15 minutes
15 minutes
Add duration to start, or subtract start from end.