Grade 4 · Math · Unit 9 of 12
Telling Time
Analog, digital and 24-hour clocks
What your child practises
Reading analog clocks to the minute, switching between 12-hour (a.m./p.m.) and 24-hour time, and working out how long events last.
NWT Curriculum learning standard: How to tell time with analog and digital clocks, using 12- and 24-hour clocks
How we explain it
Children can open this short lesson before they practise.
- An analog clock has hands. A digital clock shows numbers.
- A 24-hour clock counts the whole day: 13:00 is 1 p.m.
- For p.m. times after 12, add 12 to the hour.
Example: Write 3:45 p.m. on a 24-hour clock. It is p.m., so add 12 to the hour. 3 + 12 = 15. Answer: 15:45
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
It is evening. What time does the clock show in 24-hour time?
- 22:45
- 19:45
- 09:45
- 21:45
21:45
Hint: First read the clock: 9:45. In the evening, add 12 to the hour: 9 + 12 = 21.
Question 2
How many minutes is it from 6:50 to 7:35?
6:50 → 7:35
answer boxmin
45 min
Hint: First count to the next hour: 6:50 to 7:00 is 10 minutes. Then add the minutes after that.
Question 3
What time does the clock show?
- 4:55
- 5:55
- 4:11
- 11:20
4:55
Hint: The short red hand shows the hour. The long blue hand shows the minutes: each number on the clock is 5 more minutes. The hour hand is past the 4 but not yet at the 5, so the hour is still 4.
Question 4
What time does the clock show?
- 11:10
- 10:55
- 12:50
- 11:50
11:50
Hint: The short red hand shows the hour. The long blue hand shows the minutes: each number on the clock is 5 more minutes. The hour hand is past the 11 but not yet at the 12, so the hour is still 11.
Question 5
What is 4:10 a.m. in 24-hour time?
- 16:10
- 06:10
- 04:10
- 02:10
04:10
Hint: For p.m. times from 1 p.m. on, add 12 to the hour. a.m. times keep their hour. 12 noon is 12:00, and midnight is 00:00.
Question 6
What is 18:45 in 12-hour time?
18:4524-hour clock- 6:45 p.m.
- 4:45 p.m.
- 8:45 p.m.
- 6:45 a.m.
6:45 p.m.
Hint: In 24-hour time, 00:00 to 11:59 is a.m. and 12:00 to 23:59 is p.m. For hours 13 to 23, subtract 12 from the hour. 00 is midnight, so 00:15 is 12:15 a.m.