Let’s go through each problem one by one and solve them carefully.
---
Problem 1: How long is it from 10:30 to 1 o’clock?
We know that 1 o’clock is the same as 1:00.
From 10:30 to 11:00 is 30 minutes.
From 11:00 to 1:00 is 2 hours.
So total = 2 hours + 30 minutes =
2 hours 30 minutes.
✔ Checked: 10:30 → 11:30 (1 hr), → 12:30 (2 hrs), → 1:00 (another 30 min) → yes, 2h30m.
---
Problem 2: How long is it from 9:15 o’clock to 11 o’clock?
From 9:15 to 10:15 is 1 hour.
From 10:15 to 11:00 is 45 minutes.
Total = 1 hour + 45 minutes =
1 hour 45 minutes.
✔ Check: 9:15 → 10:15 (60 min), → 11:00 (45 more min) → 105 min = 1h45m. Correct.
---
Problem 3: Andy got on a train at 3:15. The journey took 40 minutes. What time did he get off the train?
Start at 3:15. Add 40 minutes.
3:15 + 45 minutes would be 4:00 — but we only add 40, so subtract 5 minutes → 3:55.
Or step-by-step:
3:15 + 45 min = 4:00 → minus 5 min = 3:55.
Alternatively:
3:15 + 30 min = 3:45, then +10 min = 3:55.
✔ Answer:
3:55
---
Problem 4: Neeta went to play rounders at 3:40. She played for half an hour. What time did she finish?
Half an hour = 30 minutes.
3:40 + 30 minutes = ?
3:40 + 20 min = 4:00, then +10 min = 4:10.
✔ Answer:
4:10
---
Problem 5: Pete took his dog for a walk at 8:40. He returned at 9:15. How long did it take him?
From 8:40 to 9:00 = 20 minutes.
From 9:00 to 9:15 = 15 minutes.
Total = 20 + 15 =
35 minutes.
✔ Check: 8:40 → 9:15 is 35 mins. Yes.
---
Problem 6: Gita went shopping at 10:20. She spent two and a half hours shopping. What time did she finish?
Two and a half hours = 2 hours 30 minutes.
Start at 10:20.
Add 2 hours → 12:20.
Add 30 minutes → 12:50.
✔ Answer:
12:50
---
Problem 7: Dad put the pizza in the oven at 11:55. It was ready at 12:10. How long did it take to cook?
From 11:55 to 12:00 = 5 minutes.
From 12:00 to 12:10 = 10 minutes.
Total = 5 + 10 =
15 minutes.
✔ Check: 11:55 → 12:10 is 15 mins. Correct.
---
Final Answers:
1. 2 hours 30 minutes
2. 1 hour 45 minutes
3. 3:55
4. 4:10
5. 35 minutes
6. 12:50
7. 15 minutes
Parent Tip: Review the logic above to help your child master the concept of time problem worksheet ks1.
