Calculating Time Durations

Name:

Date:

📚 Part 1: Multiple Choice & Success Criteria

Success criteria: I can subtract hours and minutes to find a duration; I can explain the steps I used; I can apply subtraction strategies (borrowing 1 hour = 60 minutes).

Differentiation: Support: use the math-work-box to show step-by-step borrowing. Expected: work independently. Challenge: solve problems crossing midnight or with mixed AM/PM times.

Extension activities: Analyse a full-day timetable to fit extra activities; convert problems to 24-hour time and subtract.

1. What is the duration between 2:15 pm and 3:40 pm?

1 hour 15 minutes

1 hour 25 minutes

2 hours 25 minutes

1 hour 45 minutes

2. What is the duration between 9:50 am and 11:05 am?

1 hour 15 minutes

1 hour 5 minutes

2 hours 15 minutes

1 hour 55 minutes

3. An event starts at 4:35 pm and finishes at 6:15 pm. How long did it last?

1 hour 30 minutes

1 hour 40 minutes

2 hours

1 hour 20 minutes

4. What is the duration between 11:50 am and 1:15 pm?

1 hour 15 minutes

1 hour 25 minutes

2 hours 5 minutes

1 hour 5 minutes

✏️ Part 2: Short Answers & Application

5. An activity starts at 2:10 pm and finishes at 3:20 pm. How long did it last? Show your working.

6. A train leaves at 22:45 and arrives at 01:10 the next day. How long is the journey? Show your working.

7. School clubs today:

- Drama: 10:00 to 10:25

- Chess: 10:35 to 11:00

- Choir: 11:05 to 11:50

Calculate the total time spent in clubs (ignore breaks). Show working.

8. You have 2 hours available from 14:00 to 16:00. You schedule two activities of 35 minutes and 50 minutes. How much free time remains? Show working and suggest a time for a 10-minute break.

9. Explain in 1–2 sentences one strategy you used to subtract times (for example, borrowing 1 hour = 60 minutes or partitioning hours and minutes).

10. Exit ticket: Write one thing that helped you understand calculating time durations today.