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Year 2 Time - Units of Time
How long would it take you to write a letter - 30 hours, 30 minutes or 30 seconds?

Year 2 Time - Units of Time

Learn which time unit to use. Seconds, minutes, hours, and days help us measure races, journeys, TV shows, and holidays accurately.

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Fascinating Fact:

Use the right unit. Use seconds for races, minutes for TV ads, hours for journeys, days for holidays.

In KS1 Maths, children compare seconds, minutes, hours, and days. They learn to choose the best unit so everyday activities are measured clearly and sensibly.

  • Second: A very short unit of time, often used for races or quick events.
  • Minute: Sixty seconds. Used for slightly longer tasks, like brushing teeth.
  • Hour: Sixty minutes. Used for longer activities, like lessons or journeys.
How do you teach units of time in KS1?

Use real-life examples. Ask children which unit fits: seconds for sprints, minutes for snacks, hours for trips, and days for holidays. This makes each unit meaningful.

What is the difference between seconds, minutes and hours?

A second is very quick. Sixty seconds make one minute. Sixty minutes make one hour. Each step is a bigger chunk of time than the last.

Which unit of time should children use for different activities?

Choose seconds for very quick events, minutes for short activities, hours for longer ones, and days for events that last a long time, like holidays.

Question 1
Which is the shortest unit of time?
5 hours
5 minutes
5 seconds
5 days
5 seconds lasts about as long as it takes to count up to 5
Question 2
Put these times in order, from longest to shortest:
30 minutes, 3 days, 30 hours, 30 seconds
30 seconds, 30 minutes, 30 hours, 3 days
30 hours, 3 days, 30 minutes, 30 seconds
3 days, 30 hours, 30 minutes, 30 seconds
30 minutes, 30 hours, 3 days, 30 seconds
3 days is the same as 72 hours!
Question 3
Which is the longest unit of time:
3 hours
3 minutes
3 seconds
30 minutes
3 hours is the same as 180 minutes
Question 4
How long should it take to brush your teeth?
3 seconds
3 hours
30 minutes
3 minutes
3 minutes is the amount of time the dentist usually recommends
Question 5
How many hours are there in a day?
24
12
10
30
From 12 midnight one day, to 12 midnight the next, it takes 24 hours in total
Question 6
How many minutes are there in half an hour?
60
30
15
10
Half of 60 is 30
Question 7
How long should it take to write a letter to a friend?
30 hours
30 minutes
30 seconds
3 days
You could write a good letter in about half an hour
Question 8
Put these times in order, from shortest to longest:
15 minutes, 5 minutes, 15 hours, 15 seconds
15 seconds, 5 minutes, 15 minutes, 15 hours
15 minutes, 15 hours, 5 minutes, 15 seconds
15 hours, 15 minutes, 5 minutes, 15 seconds
5 minutes, 15 minutes, 15 hours, 15 seconds
15 seconds is a very short amount of time, 15 hours is more than half a full day!
Question 9
One and a half hours is the same as...
30 minutes
90 minutes
60 minutes
120 minutes
1 hour is 60 minutes and half an hour is 30 minutes. Added together, this makes 90 minutes
Question 10
How many minutes are there in one hour?
1
30
50
60
It takes the minute hand 60 minutes to get all the way around the clock
You can find more about this topic by visiting BBC Bitesize - Hours and days

Author:  Angela Smith (Primary School Teacher & KS1 Quiz Writer)

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