Let’s go through each problem one by one. We’ll find how much time has passed between the START and STOP times.
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Problem 1:
START: Clock shows 2:20 (hour hand just past 2, minute hand on 4 → 4 × 5 = 20 minutes)
STOP: Clock shows 3:45 (hour hand between 3 and 4, minute hand on 9 → 9 × 5 = 45 minutes)
From 2:20 to 3:20 is 1 hour.
From 3:20 to 3:45 is 25 minutes.
Total = 1 hour + 25 minutes =
1 hour 25 minutes
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Problem 2:
START: 6:30 (minute hand on 6 → 30 minutes)
STOP: 8:30 (minute hand on 6 → 30 minutes)
From 6:30 to 8:30 is exactly
2 hours
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Problem 3:
START: 3:40 (minute hand on 8 → 8 × 5 = 40)
STOP: 4:20 (minute hand on 4 → 4 × 5 = 20)
From 3:40 to 4:00 is 20 minutes.
From 4:00 to 4:20 is 20 minutes.
Total = 20 + 20 =
40 minutes
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Problem 4:
START: 10:50 (minute hand on 10 → 10 × 5 = 50)
STOP: 2:20 (minute hand on 4 → 4 × 5 = 20)
This crosses over noon or midnight? Let’s assume it’s same day — from 10:50 AM to 2:20 PM.
From 10:50 to 11:00 → 10 min
11:00 to 2:00 → 3 hours
2:00 to 2:20 → 20 min
Total = 10 min + 3 hr + 20 min =
3 hours 30 minutes
*(Alternatively: From 10:50 to 2:50 would be 4 hours, but we stop at 2:20, so subtract 30 min → 3 hr 30 min)*
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Problem 5:
START: 3:30
STOP: 7:30
From 3:30 to 7:30 is exactly
4 hours
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Problem 6:
START: 5:18
STOP: 6:18
Exactly
1 hour
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Problem 7:
START: 2:29
STOP: 2:59
Same hour, just minutes: 59 - 29 =
30 minutes
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Problem 8:
START: 6:36
STOP: 9:36
From 6:36 to 9:36 is exactly
3 hours
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Final Answer:
1. 1 hour 25 minutes
2. 2 hours
3. 40 minutes
4. 3 hours 30 minutes
5. 4 hours
6. 1 hour
7. 30 minutes
8. 3 hours
Parent Tip: Review the logic above to help your child master the concept of third grade elapsed time worksheet.
