Elapsed time | 4th grade Math Worksheet | GreatSchools - Free Printable

Let's solve each problem in the "Elapsed Time" worksheet step by step.

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1. Write the answer to the box.

Clocks shown:
- Clock 1: 10:45
- Clock 2: 11:30
- Clock 3: 12:15

Question:
*1 hour + 1 hour = ___ minutes?*

We know:
- 1 hour = 60 minutes
- So, 1 hour + 1 hour = 60 + 60 = 120 minutes

✔ Answer: 120 minutes

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2. Complete the sentence:

*"The time between 10:45 and 11:30 is ____ minutes."*

Let’s calculate:
- From 10:45 to 11:00 = 15 minutes
- From 11:00 to 11:30 = 30 minutes
- Total = 15 + 30 = 45 minutes

✔ Answer: 45 minutes

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3. How long does it last?

Given:
- The story begins at 10:00 a.m.
- Ends at 11:20 a.m.

Calculate elapsed time:
- From 10:00 to 11:00 = 60 minutes
- From 11:00 to 11:20 = 20 minutes
- Total = 60 + 20 = 80 minutes

✔ Answer: 80 minutes

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4. How long is it?

Given:
- Music starts at 6:25 p.m.
- Ends at 8:17 p.m.

Calculate elapsed time:

Break it down:
- From 6:25 to 7:25 = 60 minutes
- From 7:25 to 8:17 = 52 minutes (since 8:17 - 7:25 = 52 min)
- Total = 60 + 52 = 112 minutes

Alternatively:
- From 6:25 to 8:25 = 2 hours = 120 minutes
- But we only go to 8:17 → 120 - 8 = 112 minutes

✔ Answer: 112 minutes

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5. Pat works on his car...

Given:
- Started at 9 a.m.
- Worked for 3 hours
- What time did he finish?

Add 3 hours to 9 a.m.:
- 9 a.m. + 3 hours = 12 p.m.

✔ Answer: 12 p.m. (or noon)

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6. Recipe steps:

Given:
- Step 1: 11:30 a.m. – 1 hour
- Step 2: 15 minutes

So:
- Step 1 ends at: 11:30 + 1 hour = 12:30 p.m.
- Step 2 starts at 12:30 p.m., lasts 15 minutes → ends at 12:45 p.m.

✔ Answer: 12:45 p.m.

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7. Movie start time

Given:
- The movie starts at 1:30 p.m.
- It is 1 hour and 15 minutes long.
- We want to know: When should you arrive 15 minutes before it starts?

So:
- Start time: 1:30 p.m.
- Arrive 15 minutes early → 1:30 - 15 minutes = 1:15 p.m.

✔ Answer: 1:15 p.m.

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✔ Final Answers Summary:

| Question | Answer |
|--------|--------|
| 1. 1 hour + 1 hour = ? minutes | 120 minutes |
| 2. Time between 10:45 and 11:30 | 45 minutes |
| 3. Story from 10:00 to 11:20 | 80 minutes |
| 4. Music from 6:25 to 8:17 | 112 minutes |
| 5. Work from 9 a.m. for 3 hours | 12 p.m. |
| 6. Recipe ends at | 12:45 p.m. |
| 7. Arrive 15 min before 1:30 p.m. | 1:15 p.m. |

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Let me know if you'd like this formatted as a printable answer sheet!