Elapsed Time - 2 - Grade 3 online exercise for - Free Printable

Let's solve each of the elapsed time problems step by step. We are given two clocks for each problem, and we need to determine how many hours have passed between the first clock and the second clock.

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1.

- First clock: 6:00 (hour hand at 6, minute hand at 12)
- Second clock: 11:00 (hour hand at 11, minute hand at 12)
- Elapsed time: 11:00 - 6:00 = 5 hours

✔ Answer: 5 hours

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2.

- First clock: 7:00 (hour hand at 7, minute hand at 12)
- Second clock: 10:00 (hour hand at 10, minute hand at 12)
- Elapsed time: 10:00 - 7:00 = 3 hours

✔ Answer: 3 hours

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3.

- First clock: 8:30 (hour hand halfway between 8 and 9, minute hand at 6)
- Second clock: 10:30 (hour hand halfway between 10 and 11, minute hand at 6)
- Elapsed time: 10:30 - 8:30 = 2 hours

✔ Answer: 2 hours

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4.

- First clock: 4:30 (hour hand halfway between 4 and 5, minute hand at 6)
- Second clock: 5:30 (hour hand halfway between 5 and 6, minute hand at 6)
- Elapsed time: 5:30 - 4:30 = 1 hour

✔ Answer: 1 hour

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5.

- First clock: 9:00 (hour hand at 9, minute hand at 12)
- Second clock: 10:00 (hour hand at 10, minute hand at 12)
- Elapsed time: 10:00 - 9:00 = 1 hour

✔ Answer: 1 hour

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6.

- First clock: 9:00 (hour hand at 9, minute hand at 12)
- Second clock: 2:00 (hour hand at 2, minute hand at 12)
- Elapsed time: 2:00 - 9:00 → This goes past midnight? Let’s check:
- From 9:00 to 12:00 = 3 hours
- From 12:00 to 2:00 = 2 hours
- Total = 3 + 2 = 5 hours

✔ Answer: 5 hours

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7.

- First clock: 1:30 (hour hand halfway between 1 and 2, minute hand at 6)
- Second clock: 4:00 (hour hand at 4, minute hand at 12)
- Elapsed time: 4:00 - 1:30 = 2 hours and 30 minutes → But the question asks for hours.
- 2 hours and 30 minutes is not a whole number of hours, but let’s double-check if it's intended as whole hours only.

Wait — this might be a trick. But looking closely:

- From 1:30 to 4:00 = 2 hours 30 minutes = 2.5 hours, but since the blank says “______ hours”, likely expecting whole numbers.

But in this case, perhaps the answer is 2.5 or maybe there's a mistake?

Wait — let’s recheck the clocks.

- First clock: hour hand at 1, minute hand at 6 → 1:30
- Second clock: hour hand at 4, minute hand at 12 → 4:00

So yes, elapsed time = 2 hours 30 minutes → 2.5 hours

But the worksheet says "______ hours", not "______ hours and ______ minutes".

However, since it's a Grade 3 worksheet, and all others seem to be whole hours, maybe I made a mistake?

Wait — look again at the second clock in #7: The hour hand is pointing directly at 4, minute hand at 12 → 4:00. First clock: hour hand halfway between 1 and 2 → 1:30.

So from 1:30 to 4:00 is 2 hours 30 minutes → 2.5 hours

But since the answer format is “______ hours” and likely expects a whole number, perhaps it's a typo? Or maybe we're supposed to count only full hours?

No — elapsed time should be exact.

But let’s see other problems. Most are whole hours. So maybe this one is an exception?

Alternatively, could the first clock be 1:00?

No — minute hand is at 6 → 30 minutes.

So it's definitely 1:30 to 4:00 → 2.5 hours.

But since the answer space is just “______ hours”, and the rest are whole numbers, perhaps the worksheet expects 2 hours? That would be incorrect.

Wait — maybe I misread.

Let me double-check the image description.

Actually, upon closer inspection, the first clock in #7 shows:
- Hour hand between 1 and 2
- Minute hand at 6 → 1:30
- Second clock: hour hand at 4, minute hand at 12 → 4:00

Yes → 2.5 hours.

But perhaps the problem allows decimal answers? Or maybe it's rounded?

But the instructions say “Write down the time which has elapsed”, and it says “_____ hours”, so probably they expect 2.5 or 2 1/2.

But let’s assume the worksheet wants whole hours, then it would be 2 hours (if rounding down), but that's not accurate.

Alternatively, maybe I'm wrong about the time.

Wait — no, the minute hand at 6 means 30 minutes.

So elapsed time is 2.5 hours.

But let's continue and see if others are consistent.

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8.

- First clock: 8:30 (hour hand halfway between 8 and 9, minute hand at 6)
- Second clock: 12:00 (hour hand at 12, minute hand at 12)
- Elapsed time: 12:00 - 8:30 = 3 hours 30 minutes → 3.5 hours

Again, not a whole number.

Wait — but let’s check:

From 8:30 to 12:00:
- 8:30 → 9:30 = 1 hour
- 9:30 → 10:30 = 1 hour
- 10:30 → 11:30 = 1 hour
- 11:30 → 12:00 = 0.5 hour
- Total = 3.5 hours

So 3.5 hours

But again, not a whole number.

Hmm.

Wait — maybe I'm misreading the clocks.

Let’s go back to #7 and #8.

Wait — #7:
- First clock: hour hand between 1 and 2, minute hand at 6 → 1:30
- Second clock: hour hand at 4, minute hand at 12 → 4:00 → elapsed = 2.5 hours

But maybe the second clock is 3:00? No — hour hand is clearly at 4.

Wait — perhaps the first clock is 1:00? No — minute hand is at 6 → 30 minutes.

So it must be 1:30.

Similarly, #8:
- First clock: hour hand between 8 and 9, minute hand at 6 → 8:30
- Second clock: hour hand at 12, minute hand at 12 → 12:00 → elapsed = 3.5 hours

Still not whole.

But wait — maybe these are not meant to be exact? Or maybe I’m missing something.

Wait — let’s look at #9:

9.

- First clock: 9:00 (hour hand at 9, minute hand at 12)
- Second clock: 1:30 (hour hand halfway between 1 and 2, minute hand at 6)
- Elapsed time: 1:30 - 9:00 → going forward?
- From 9:00 to 1:30 next day? → 16.5 hours? No, that can't be.

Wait — no, time moves forward.

But 1:30 is earlier than 9:00? No — unless it's AM/PM.

But clocks don’t show AM/PM.

So from 9:00 to 1:30 — if it's same day, 1:30 is before 9:00? No — 1:30 PM is after 9:00 AM.

But here, both clocks are analog — so we assume same day.

But 1:30 comes before 9:00 on a 12-hour cycle?

Wait — no: 1:30 to 9:00 is 7.5 hours later.

But here, first clock is 9:00, second is 1:30 — so if 1:30 is later than 9:00, it must be 1:30 PM and 9:00 AM → difference is 4.5 hours? No.

Wait — let’s think:

If first clock is 9:00, second is 1:30 — and we assume time passes forward, then 1:30 must be next day? But that would be 16.5 hours.

That doesn't make sense.

Unless the second clock is 1:30 PM and first is 9:00 AM → elapsed = 4.5 hours.

But on a 12-hour clock, we can't tell.

But in elapsed time problems, we assume the second time is later than the first.

So if first is 9:00, second is 1:30, then 1:30 must be after 9:00 — so 1:30 PM, 9:00 AM → elapsed = 4.5 hours.

But 1:30 is less than 9:00 numerically, so it must be next cycle.

So from 9:00 to 1:30 → 4.5 hours.

Wait — 9:00 to 12:00 = 3 hours, 12:00 to 1:30 = 1.5 hours → total 4.5 hours.

So elapsed time = 4.5 hours

But again, not a whole number.

This suggests that some problems may involve half-hours.

But the worksheet says “______ hours”, so perhaps fractional answers are allowed.

Alternatively, maybe I'm misreading the clocks.

Let’s re-express all with careful reading.

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Let me re-evaluate all carefully:

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1.

- Clock 1: 6:00 (hour at 6, min at 12)
- Clock 2: 11:00 (hour at 11, min at 12)
- Elapsed: 11 - 6 = 5 hours

✔ 5

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2.

- Clock 1: 7:00
- Clock 2: 10:00
- Elapsed: 3 hours

✔ 3

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3.

- Clock 1: 8:30 (hour between 8 and 9, min at 6)
- Clock 2: 10:30 (hour between 10 and 11, min at 6)
- Elapsed: 10:30 - 8:30 = 2 hours

✔ 2

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4.

- Clock 1: 4:30
- Clock 2: 5:30
- Elapsed: 1 hour

✔ 1

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5.

- Clock 1: 9:00
- Clock 2: 10:00
- Elapsed: 1 hour

✔ 1

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6.

- Clock 1: 9:00
- Clock 2: 2:00
- 2:00 is later than 9:00? Only if it's 2:00 PM and 9:00 AM → elapsed = 5 hours (from 9 to 2)

Yes → 9 to 12 = 3 hours, 12 to 2 = 2 hours → total 5 hours

✔ 5

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7.

- Clock 1: 1:30
- Clock 2: 4:00
- 4:00 - 1:30 = 2 hours 30 minutes = 2.5 hours

But since the answer is “______ hours”, and it's a grade 3 worksheet, maybe they expect 2 hours? But that's incorrect.

Wait — perhaps the second clock is 3:00?

No — hour hand is at 4, minute hand at 12 → 4:00.

So must be 2.5 hours.

But let’s assume they want whole hours, so perhaps 2 hours? But that’s not accurate.

Alternatively, maybe the first clock is 1:00?

No — minute hand is at 6 → 30 minutes.

So 1:30.

So elapsed = 2.5 hours.

But maybe the worksheet accepts 2.5 or 2 1/2?

We'll write 2.5.

But let’s keep going.

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8.

- Clock 1: 8:30
- Clock 2: 12:00
- 12:00 - 8:30 = 3.5 hours

✔ 3.5

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9.

- Clock 1: 9:00
- Clock 2: 1:30
- Now, 1:30 is after 9:00 only if it's 1:30 PM and 9:00 AM → elapsed = 4.5 hours

Because:
- 9:00 to 12:00 = 3 hours
- 12:00 to 1:30 = 1.5 hours
- Total = 4.5 hours

✔ 4.5

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10.

- Clock 1: 10:30 (hour between 10 and 11, min at 6)
- Clock 2: 1:00 (hour at 1, min at 12)
- 1:00 - 10:30 = 2.5 hours? Wait — 10:30 to 1:00 →
- 10:30 to 12:00 = 1.5 hours
- 12:00 to 1:00 = 1 hour
- Total = 2.5 hours

But 1:00 is later than 10:30? Yes — 1:00 PM vs 10:30 AM → elapsed = 2.5 hours

✔ 2.5

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Now, summarizing:

| Problem | Start Time | End Time | Elapsed Time |
|--------|------------|----------|--------------|
| 1 | 6:00 | 11:00 | 5 hours |
| 2 | 7:00 | 10:00 | 3 hours |
| 3 | 8:30 | 10:30 | 2 hours |
| 4 | 4:30 | 5:30 | 1 hour |
| 5 | 9:00 | 10:00 | 1 hour |
| 6 | 9:00 | 2:00 | 5 hours |
| 7 | 1:30 | 4:00 | 2.5 hours |
| 8 | 8:30 | 12:00 | 3.5 hours |
| 9 | 9:00 | 1:30 | 4.5 hours |
| 10 | 10:30 | 1:00 | 2.5 hours |

But the worksheet says “______ hours” — so it might expect whole numbers, but some are half-hours.

But in grade 3, they often introduce half-hours.

So likely, they accept decimals or fractions.

But the answer format is just “______ hours”, so we can write:

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Final Answers:

1. 5
2. 3
3. 2
4. 1
5. 1
6. 5
7. 2.5
8. 3.5
9. 4.5
10. 2.5

But wait — let’s double-check #9:

- First clock: 9:00
- Second clock: 1:30

Is 1:30 after 9:00? On a 12-hour clock, 1:30 is earlier than 9:00 in numerical value, so it must be the next cycle.

So from 9:00 to 1:30 → 4.5 hours (since 9 to 12 is 3 hours, 12 to 1:30 is 1.5 hours).

Yes.

Similarly, #10: 10:30 to 1:00 → 2.5 hours.

So all are correct.

But perhaps the worksheet intends only whole hours? Then maybe I misread.

Wait — let’s look at #7 again.

Clock 1: hour hand between 1 and 2, minute at 6 → 1:30
Clock 2: hour hand at 4, minute at 12 → 4:00

Yes → 2.5 hours.

But maybe the second clock is 3:00? No — hour hand is at 4.

Unless it's a typo.

But based on the image, it seems correct.

Alternatively, maybe the first clock is 1:00?

No — minute hand is at 6 → 30 minutes.

So 1:30.

Therefore, the answers are:

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✔ Final Answers:

1. 5
2. 3
3. 2
4. 1
5. 1
6. 5
7. 2.5
8. 3.5
9. 4.5
10. 2.5

If the worksheet expects whole numbers, then some answers might be rounded, but that would be inaccurate.

Alternatively, perhaps the times are meant to be read differently.

But based on standard analog clock reading, these are correct.

So the solution is:

> 1. 5 hours
> 2. 3 hours
> 3. 2 hours
> 4. 1 hour
> 5. 1 hour
> 6. 5 hours
> 7. 2.5 hours
> 8. 3.5 hours
> 9. 4.5 hours
> 10. 2.5 hours

You can write them as fractions like 2 1/2, 3 1/2, etc., if preferred.

But in decimal form, it's fine.

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Explanation:

To find elapsed time:
1. Read the start time from the first clock.
2. Read the end time from the second clock.
3. Subtract the start time from the end time.
4. If the end time is earlier than the start time (e.g., 1:30 after 9:00), add 12 hours to the end time (assuming 12-hour clock).
5. Calculate the difference in hours.

For example:
- From 9:00 to 1:30 → 1:30 + 12 = 13:30, then 13:30 - 9:00 = 4.5 hours.

All calculations follow this logic.

✔ Final Answer:
1. 5
2. 3
3. 2
4. 1
5. 1
6. 5
7. 2.5
8. 3.5
9. 4.5
10. 2.5