Solve problems involving converting between units of time | Maths

Starter quiz

Match the numbers and phrases to make the statements correct.
- 60
  
  ⇔
  
  minutes in one hour. ✓
- 12
  
  ⇔
  
  months in one year. ✓
- 24
  
  ⇔
  
  hours in one day. ✓
- 7
  
  ⇔
  
  days in one week. ✓
- 365
  
  ⇔
  
  days in one year. ✓
40 = 15 + ______
- '25' ✓
37 + ______ = 60
- '23' ✓
Match the calculation to the strategy.
- 24 × 3
  
  ⇔
  
  Short multiplication ✓
- 12 × 9
  
  ⇔
  
  No strategy needed. This should be a known fact ✓
- 24 × 10
  
  ⇔
  
  Move the digits one place to the left ✓
What time is being shown here?
- quarter to 3 ✓
- 9 minutes past 2
- 15 minutes past 9
Match the time intervals.
- 15 minutes =
  
  ⇔
  
  quarter of an hour ✓
- 30 minutes =
  
  ⇔
  
  half an hour ✓
- 45 minutes =
  
  ⇔
  
  three quarters of an hour ✓

Exit quiz

What time is 20 minutes after 3:55?
- 23:55
- 3:75
- 4:15 ✓
- 3:35
What time is 25 minutes before 3:10? 2:______
- '2:45' ✓
A TV show starts at quarter to 5 and ends at 5:25. How long is the programme? The programme lasts for ______ minutes.
- '40' ✓
Choose the correct inequality symbol to describe the relationship between the units of time. 5 weeks ______ 30 days
- <
- =
- > ✓
Choose the correct inequality symbol to describe the relationship between the units of time. 3,000 days ______ 10 years
- < ✓
- =
- >
Choose the correct inequality symbol to describe the relationship between these time intervals. 60 months ______ 5 years
- <
- = ✓
- >

Worksheet

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Lesson Details

Key learning points

There are 60 minutes in an hour.
There are 24 hours in a day.
There are 12 months in a year.
There are 365 days in most years.

Common misconception

Some pupils might think 8:45 + 20 mins = 8:65. As our system of time is not based around the decimal system, this is incorrect.

Some pupils may still not be fully au fait with telling the time, though the lesson presumes they are. Providing them with a mini-clock with movable hands will help to reinforce the idea of bridging to and then from the o'clock time.

Keywords

Convert - To convert is to change a value or expression from one form to another, such as minutes to hours.