Printable elapsed time math worksheet for students to practice calculating time differences.
A math worksheet titled "Elapsed Time" with a table to calculate the time difference between start and end times, featuring 15 questions with given times and spaces to fill in the elapsed time.
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Show Answer Key & Explanations
Step-by-step solution for: Elapsed Time Worksheets
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Show Answer Key & Explanations
Step-by-step solution for: Elapsed Time Worksheets
You’ve uploaded a worksheet titled “Elapsed Time” that asks students to complete a table by finding the missing time — either the Start Time, End Time, or Elapsed Time — given the other two.
Let’s solve each row one by one, explaining the logic clearly.
---
- Elapsed Time = End Time – Start Time
- To find Start Time: Start Time = End Time – Elapsed Time
- To find End Time: End Time = Start Time + Elapsed Time
- Be careful with AM/PM and crossing over noon/midnight.
- “Noon” = 12:00 P.M.
- “Midnight” = 12:00 A.M. (but not needed here)
---
## ✔ Solved Table with Explanations:
---
Add 2h 55m to 3:45 P.M.
→ 3:45 + 2h = 5:45 P.M.
→ 5:45 + 55m = 6:40 P.M.
✔ End Time = 6:40 P.M.
---
Subtract: 9:35 - 8:10
→ Hours: 9 - 8 = 1 hour
→ Minutes: 35 - 10 = 25 minutes
✔ Elapsed Time = 1 hour 25 minutes
*(Note: Worksheet says “2 hours 55 minutes” — that’s incorrect for this row. We’ll assume it's a typo or misprint, and solve correctly.)*
---
Subtract 30 minutes from 7:20 P.M.
→ 7:20 - 0:30 = 6:50 P.M.
✔ Start Time = 6:50 P.M.
---
From 10:20 A.M. to 12:00 P.M.
→ 10:20 → 11:20 = 1 hour
→ 11:20 → 12:00 = 40 minutes
→ Total = 1 hour 40 minutes
✔ Elapsed Time = 1 hour 40 minutes
---
Add 5h 25m to 1:50 P.M.
→ 1:50 + 5h = 6:50 P.M.
→ 6:50 + 25m = 7:15 P.M.
✔ End Time = 7:15 P.M.
---
Subtract: 10:25 - 7:35
→ From 7:35 to 10:35 would be 3 hours, but we stop at 10:25 → subtract 10 minutes → 2 hours 50 minutes
Or step-by-step:
→ 7:35 → 8:35 = 1h
→ 8:35 → 9:35 = 1h
→ 9:35 → 10:25 = 50m
→ Total = 2 hours 50 minutes
✔ Elapsed Time = 2 hours 50 minutes
---
Subtract 6h 45m from 8:50 A.M.
→ 8:50 - 6h = 2:50 A.M.
→ 2:50 - 45m = 2:05 A.M.
✔ Start Time = 2:05 A.M.
---
Add 1h 20m to 6:20 P.M.
→ 6:20 + 1h = 7:20 P.M.
→ 7:20 + 20m = 7:40 P.M.
✔ End Time = 7:40 P.M.
---
From 9:30 A.M. to 12:00 P.M.
→ 9:30 → 10:30 = 1h
→ 10:30 → 11:30 = 1h
→ 11:30 → 12:00 = 30m
→ Total = 2 hours 30 minutes
✔ Elapsed Time = 2 hours 30 minutes
---
Subtract 5h 20m from 10:35 A.M.
→ 10:35 - 5h = 5:35 A.M.
→ 5:35 - 20m = 5:15 A.M.
✔ Start Time = 5:15 A.M.
---
Add 2h 15m to 3:55 A.M.
→ 3:55 + 2h = 5:55 A.M.
→ 5:55 + 15m = 6:10 A.M.
✔ End Time = 6:10 A.M.
---
Subtract 7h 10m from 8:50 P.M.
→ 8:50 - 7h = 1:50 P.M.
→ 1:50 - 10m = 1:40 P.M.
✔ Start Time = 1:40 P.M.
---
Add 1h 40m to 4:35 P.M.
→ 4:35 + 1h = 5:35 P.M.
→ 5:35 + 40m = 6:15 P.M.
✔ End Time = 6:15 P.M.
---
Subtract 7h 5m from 8:30 A.M.
→ 8:30 - 7h = 1:30 A.M.
→ 1:30 - 5m = 1:25 A.M.
✔ Start Time = 1:25 A.M.
---
Subtract: 11:00 - 8:05
→ 8:05 → 9:05 = 1h
→ 9:05 → 10:05 = 1h
→ 10:05 → 11:00 = 55m
→ Total = 2 hours 55 minutes
✔ Elapsed Time = 2 hours 55 minutes
---
## 📋 Final Completed Table:
| Q.No | Start Time | End Time | Elapsed Time |
|------|--------------|--------------|--------------------|
| 1 | 3:45 P.M. | 6:40 P.M. | 2 hours 55 minutes |
| 2 | 8:10 A.M. | 9:35 A.M. | 1 hour 25 minutes |
| 3 | 6:50 P.M. | 7:20 P.M. | 30 minutes |
| 4 | 10:20 A.M. | Noon | 1 hour 40 minutes |
| 5 | 1:50 P.M. | 7:15 P.M. | 5 hours 25 minutes |
| 6 | 7:35 P.M. | 10:25 P.M. | 2 hours 50 minutes |
| 7 | 2:05 A.M. | 8:50 A.M. | 6 hours 45 minutes |
| 8 | 6:20 P.M. | 7:40 P.M. | 1 hour 20 minutes |
| 9 | 9:30 A.M. | Noon | 2 hours 30 minutes |
| 10 | 5:15 A.M. | 10:35 A.M. | 5 hours 20 minutes |
| 11 | 3:55 A.M. | 6:10 A.M. | 2 hours 15 minutes |
| 12 | 1:40 P.M. | 8:50 P.M. | 7 hours 10 minutes |
| 13 | 4:35 P.M. | 6:15 P.M. | 1 hour 40 minutes |
| 14 | 1:25 A.M. | 8:30 A.M. | 7 hours 5 minutes |
| 15 | 8:05 P.M. | 11:00 P.M. | 2 hours 55 minutes |
---
## 🎯 Summary:
All missing times have been calculated using basic addition/subtraction of hours and minutes, being mindful of AM/PM transitions and “Noon”.
> ⚠️ Note: Row 2 in the original worksheet incorrectly lists “2 hours 55 minutes” as elapsed time — our correct calculation is 1 hour 25 minutes. This may be an error in the worksheet.
---
✔ You can now fill in the blanks on your worksheet using this completed table!
Let me know if you’d like a printable version or explanation for younger learners!
Let’s solve each row one by one, explaining the logic clearly.
---
🔢 Key Concepts:
- Elapsed Time = End Time – Start Time
- To find Start Time: Start Time = End Time – Elapsed Time
- To find End Time: End Time = Start Time + Elapsed Time
- Be careful with AM/PM and crossing over noon/midnight.
- “Noon” = 12:00 P.M.
- “Midnight” = 12:00 A.M. (but not needed here)
---
## ✔ Solved Table with Explanations:
---
1) Start: 3:45 P.M., Elapsed: 2 hours 55 minutes → Find End Time
Add 2h 55m to 3:45 P.M.
→ 3:45 + 2h = 5:45 P.M.
→ 5:45 + 55m = 6:40 P.M.
✔ End Time = 6:40 P.M.
---
2) Start: 8:10 A.M., End: 9:35 A.M. → Find Elapsed Time
Subtract: 9:35 - 8:10
→ Hours: 9 - 8 = 1 hour
→ Minutes: 35 - 10 = 25 minutes
✔ Elapsed Time = 1 hour 25 minutes
*(Note: Worksheet says “2 hours 55 minutes” — that’s incorrect for this row. We’ll assume it's a typo or misprint, and solve correctly.)*
---
3) End: 7:20 P.M., Elapsed: 30 minutes → Find Start Time
Subtract 30 minutes from 7:20 P.M.
→ 7:20 - 0:30 = 6:50 P.M.
✔ Start Time = 6:50 P.M.
---
4) Start: 10:20 A.M., End: Noon (12:00 P.M.) → Find Elapsed Time
From 10:20 A.M. to 12:00 P.M.
→ 10:20 → 11:20 = 1 hour
→ 11:20 → 12:00 = 40 minutes
→ Total = 1 hour 40 minutes
✔ Elapsed Time = 1 hour 40 minutes
---
5) Start: 1:50 P.M., Elapsed: 5 hours 25 minutes → Find End Time
Add 5h 25m to 1:50 P.M.
→ 1:50 + 5h = 6:50 P.M.
→ 6:50 + 25m = 7:15 P.M.
✔ End Time = 7:15 P.M.
---
6) Start: 7:35 P.M., End: 10:25 P.M. → Find Elapsed Time
Subtract: 10:25 - 7:35
→ From 7:35 to 10:35 would be 3 hours, but we stop at 10:25 → subtract 10 minutes → 2 hours 50 minutes
Or step-by-step:
→ 7:35 → 8:35 = 1h
→ 8:35 → 9:35 = 1h
→ 9:35 → 10:25 = 50m
→ Total = 2 hours 50 minutes
✔ Elapsed Time = 2 hours 50 minutes
---
7) End: 8:50 A.M., Elapsed: 6 hours 45 minutes → Find Start Time
Subtract 6h 45m from 8:50 A.M.
→ 8:50 - 6h = 2:50 A.M.
→ 2:50 - 45m = 2:05 A.M.
✔ Start Time = 2:05 A.M.
---
8) Start: 6:20 P.M., Elapsed: 1 hour 20 minutes → Find End Time
Add 1h 20m to 6:20 P.M.
→ 6:20 + 1h = 7:20 P.M.
→ 7:20 + 20m = 7:40 P.M.
✔ End Time = 7:40 P.M.
---
9) Start: 9:30 A.M., End: Noon (12:00 P.M.) → Find Elapsed Time
From 9:30 A.M. to 12:00 P.M.
→ 9:30 → 10:30 = 1h
→ 10:30 → 11:30 = 1h
→ 11:30 → 12:00 = 30m
→ Total = 2 hours 30 minutes
✔ Elapsed Time = 2 hours 30 minutes
---
10) End: 10:35 A.M., Elapsed: 5 hours 20 minutes → Find Start Time
Subtract 5h 20m from 10:35 A.M.
→ 10:35 - 5h = 5:35 A.M.
→ 5:35 - 20m = 5:15 A.M.
✔ Start Time = 5:15 A.M.
---
11) Start: 3:55 A.M., Elapsed: 2 hours 15 minutes → Find End Time
Add 2h 15m to 3:55 A.M.
→ 3:55 + 2h = 5:55 A.M.
→ 5:55 + 15m = 6:10 A.M.
✔ End Time = 6:10 A.M.
---
12) End: 8:50 P.M., Elapsed: 7 hours 10 minutes → Find Start Time
Subtract 7h 10m from 8:50 P.M.
→ 8:50 - 7h = 1:50 P.M.
→ 1:50 - 10m = 1:40 P.M.
✔ Start Time = 1:40 P.M.
---
13) Start: 4:35 P.M., Elapsed: 1 hour 40 minutes → Find End Time
Add 1h 40m to 4:35 P.M.
→ 4:35 + 1h = 5:35 P.M.
→ 5:35 + 40m = 6:15 P.M.
✔ End Time = 6:15 P.M.
---
14) End: 8:30 A.M., Elapsed: 7 hours 5 minutes → Find Start Time
Subtract 7h 5m from 8:30 A.M.
→ 8:30 - 7h = 1:30 A.M.
→ 1:30 - 5m = 1:25 A.M.
✔ Start Time = 1:25 A.M.
---
15) Start: 8:05 P.M., End: 11:00 P.M. → Find Elapsed Time
Subtract: 11:00 - 8:05
→ 8:05 → 9:05 = 1h
→ 9:05 → 10:05 = 1h
→ 10:05 → 11:00 = 55m
→ Total = 2 hours 55 minutes
✔ Elapsed Time = 2 hours 55 minutes
---
## 📋 Final Completed Table:
| Q.No | Start Time | End Time | Elapsed Time |
|------|--------------|--------------|--------------------|
| 1 | 3:45 P.M. | 6:40 P.M. | 2 hours 55 minutes |
| 2 | 8:10 A.M. | 9:35 A.M. | 1 hour 25 minutes |
| 3 | 6:50 P.M. | 7:20 P.M. | 30 minutes |
| 4 | 10:20 A.M. | Noon | 1 hour 40 minutes |
| 5 | 1:50 P.M. | 7:15 P.M. | 5 hours 25 minutes |
| 6 | 7:35 P.M. | 10:25 P.M. | 2 hours 50 minutes |
| 7 | 2:05 A.M. | 8:50 A.M. | 6 hours 45 minutes |
| 8 | 6:20 P.M. | 7:40 P.M. | 1 hour 20 minutes |
| 9 | 9:30 A.M. | Noon | 2 hours 30 minutes |
| 10 | 5:15 A.M. | 10:35 A.M. | 5 hours 20 minutes |
| 11 | 3:55 A.M. | 6:10 A.M. | 2 hours 15 minutes |
| 12 | 1:40 P.M. | 8:50 P.M. | 7 hours 10 minutes |
| 13 | 4:35 P.M. | 6:15 P.M. | 1 hour 40 minutes |
| 14 | 1:25 A.M. | 8:30 A.M. | 7 hours 5 minutes |
| 15 | 8:05 P.M. | 11:00 P.M. | 2 hours 55 minutes |
---
## 🎯 Summary:
All missing times have been calculated using basic addition/subtraction of hours and minutes, being mindful of AM/PM transitions and “Noon”.
> ⚠️ Note: Row 2 in the original worksheet incorrectly lists “2 hours 55 minutes” as elapsed time — our correct calculation is 1 hour 25 minutes. This may be an error in the worksheet.
---
✔ You can now fill in the blanks on your worksheet using this completed table!
Let me know if you’d like a printable version or explanation for younger learners!
Parent Tip: Review the logic above to help your child master the concept of time lapse worksheet 5th.
