Time intervals on a time line

The Maths Habit

Ali says the bus journey took 50 minutes. Is he right?

123456789101112
The bus leaves
123456789101112
The bus arrives

No. The long hand only moves on two fives: 10 minutes. Time does not work like ordinary numbers.

Time interval
How long it is from one time to another.
O'clock
A time exactly on the hour.
Hour
60 minutes.

2:403:005:005:15+ 20 min+ 2 h+ 15 min
  1. Jump to the next o'clock.2:40 to 3:00 is 20 min.
  2. Jump the hours.3:00 to 5:00 is 2 h.
  3. Jump the minutes left.5:00 to 5:15 is 15 min.
  4. Add the jumps.2 h 35 min. More than 60 minutes? Make an hour.

What is the next o'clock after 2:40?

2:40 3:00

How many minutes from 2:40 to 3:00?

2:40 → 3:00 20 min

How long is it from 3:45 to 6:20? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 2 h 35 min

3:456:204:006:0015 min2 h20 min

How long is it from 10:50 to 12:15? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 1 h 25 min

10:5011:0012:1510 min12:001 h15 min

How long is it from 3:45 to 6:20? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 2 h 35 min

3:456:204:006:0015 min2 h20 min

How long is it from 1:25 to 2:40? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 1 h 15 min

1:252:402:0035 min40 min

How long is it from 3:45 to 6:20? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 2 h 35 min

3:456:204:006:0015 min2 h20 min

How long is it from 7:40 to 9:05? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 1 h 25 min

7:408:009:0520 min9:001 h5 min

How long is it from 3:45 to 6:20? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 2 h 35 min

3:456:204:006:0015 min2 h20 min

How long is it from 11:50 to 12:10? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 20 min

11:5012:1012:0010 min10 min

How long is it from 3:45 to 6:20? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 2 h 35 min

3:456:204:006:0015 min2 h20 min

A film starts at 4:35 and ends at 6:10. How long is it? Jump to the next o'clock. Jump the hours. Jump the minutes left. Add the jumps. 1 h 35 min

4:356:105:006:00+ 25 min+ 1 h+ 10 min

Time intervals on a time line worksheet, page 1

4:405:006:006:15+ 20 min+ 1 h+ 15 min
  1. Split the time.1 h 35 min from 4:40: 20 min takes you to 5:00.
  2. Jump the hours.5:00 to 6:00.
  3. Jump the minutes left.35 − 20 = 15 min more: 6:15.
  4. Where do you land?It ends at 6:15. To find a start time, count back from the end.

What time is 50 minutes after 3:00?

3:00 + 50 min 3:50

What time is 1 hour after 6:40?

6:40 + 1 h 7:40

It starts at 2:30 and lasts 1 h 45 min. When does it end? Jump to the next o'clock, then the hours, then the minutes left. Where do you land? 4:15

2:303:004:004:1530 min1 h15 min

It starts at 8:40 and lasts 2 h 35 min. When does it end? Jump to the next o'clock, then the hours, then the minutes left. Where do you land? 11:15

8:409:0020 min11:0011:152 h15 min

It starts at 2:30 and lasts 1 h 45 min. When does it end? Jump to the next o'clock, then the hours, then the minutes left. Where do you land? 4:15

2:303:004:004:1530 min1 h15 min

It ends at 5:10 and lasts 1 h 25 min. When does it start? Count back from the end. 3:45

5:103:454:005:0015 min1 h10 min

Time intervals on a time line worksheet, page 2

Answer sheet

Thumbs up: right. Thumbs down: wrong.

  1. 9:50 to 10:10 is 20 min

    Right

  2. 2:45 to 3:15 is 1 h 10 min

    Wrong: 30 min

  3. 4:45 to 6:15 is 1 h 30 min

    Right

  4. 6:40 to 7:20 is 1 h 20 min

    Wrong: 40 min

  1. A film lasts 2 h 10 min and ends at 9:00. When did it start?

    6:50

  2. A bus leaves at 8:00 and then every 25 minutes. When does the fourth bus leave?

    9:15

  3. How long is it from 11:40 to 12:20?

    40 min

  1. How long is it from 3:40 to 5:15?

    1 h 35 min

  2. How long is it from 9:50 to 10:10?

    20 min

  3. A film starts at 6:50 pm and lasts 1 h 25 min. When does it end?

    8:15 pm
Exit tickets to print