Let’s go through each problem one by one.
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Problem 1:
Patricia and Barton ate brunch from 11:00 a.m. to 12:30 p.m. How long were they eating brunch?
→ From 11:00 a.m. to 12:00 p.m. is 1 hour.
→ From 12:00 p.m. to 12:30 p.m. is 30 minutes.
→ So total = 1 hour + 30 minutes =
1 hour 30 minutes
✔ Check: 11:00 to 12:30 is indeed 1.5 hours → correct.
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Problem 2:
Jack went to the lake at 9:45 a.m. and left at 11:30 a.m. How long was he fishing?
→ From 9:45 a.m. to 10:45 a.m. = 1 hour
→ From 10:45 a.m. to 11:30 a.m. = 45 minutes
→ Total = 1 hour + 45 minutes =
1 hour 45 minutes
✔ Check: 9:45 to 11:30 → subtract: 11:30 - 9:45 = 1h45m → correct.
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Problem 3:
Rich went for a 1 hour hike. They started at 1:15 p.m. What time did they finish?
→ Start: 1:15 p.m.
→ Add 1 hour → 1:15 + 1:00 =
2:15 p.m.
✔ Check: Simple addition — no tricky minute overflow → correct.
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Problem 4:
Seiler started homework at 4:30 p.m. and finished at 5:15 p.m. How long did he work?
→ From 4:30 p.m. to 5:30 p.m. would be 1 hour, but he stopped at 5:15 → so 15 minutes less.
→ Or: 4:30 to 5:00 = 30 minutes; 5:00 to 5:15 = 15 minutes → total = 45 minutes.
✔ Check: 5:15 - 4:30 = 45 minutes → correct.
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Problem 5:
May put pie in oven at 6:30 p.m. It baked for 2 hours and 30 minutes. What time did she take it out?
→ Start: 6:30 p.m.
→ Add 2 hours → 8:30 p.m.
→ Add 30 minutes → 8:30 + 0:30 =
9:00 p.m.
✔ Check: 6:30 + 2:30 = 9:00 → correct.
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Final Answer:
1. 1 hour 30 minutes
2. 1 hour 45 minutes
3. 2:15 p.m.
4. 45 minutes
5. 9:00 p.m.
Parent Tip: Review the logic above to help your child master the concept of 3 md 1 worksheet.
