# 12-hour and 24-hour time

> Grade 4: convert 12-hour and 24-hour times, read a timetable, minutes and seconds, durations across the hour, digital and analogue clocks.

Source: https://olyclass.com/library/math-g4-time-24h-en/

- Subject: Math
- Level: Grade 4
- Practice: 16
- Play it free on one screen (projector, TV or whiteboard): https://olyclass.com/library?play=math-g4-time-24h-en
- Copy and edit it: https://olyclass.com/library?copy=math-g4-time-24h-en
- Games it plays well in: [Tile Grab](https://olyclass.com/classroom-games/tile-grab/), [Dare Board](https://olyclass.com/classroom-games/dare-board/), [Prize Climb](https://olyclass.com/classroom-games/prize-climb/), [Ring the Bell](https://olyclass.com/classroom-games/ring-the-bell/)

## Questions

1. What is 3:30 pm in 24-hour time? (03:30 / 13:30 / 15:30 / 18:30)
   Answer: 15:30
2. What is 20:15 in 12-hour time? (10:15 pm / 6:15 pm / 8:15 am / 8:15 pm)
   Answer: 8:15 pm
3. 12:00 at midday is written as 12:00 in 24-hour time.
   Answer: True
4. A bus leaves at 09:20 and the next one at 09:50. How many minutes between them? (20 minutes / 30 minutes / 40 minutes / 70 minutes)
   Answer: 30 minutes
5. Train A leaves at 14:10 and arrives at 15:00. How long is the trip? (40 minutes / 50 minutes / 60 minutes / 90 minutes)
   Answer: 50 minutes
6. A film starts at 16:45 and ends at 18:15. How many minutes long is it?
   Answer: 90 minutes
7. How many seconds are in 3 minutes? (120 / 180 / 300 / 360)
   Answer: 180
8. There are 90 seconds in one and a half minutes.
   Answer: True
9. Which is the best estimate for how long it takes to clap your hands once? (1 hour / 1 minute / 1 second / 10 minutes)
   Answer: 1 second
10. A lesson starts at 10:40 and lasts 45 minutes. When does it end? (11:15 / 11:25 / 11:35 / 11:45)
   Answer: 11:25
11. How many minutes are there from 5:50 pm to 6:20 pm?
   Answer: 30 minutes
12. A digital clock shows 19:05. What is that in 12-hour time? (5:07 pm / 7:05 am / 7:05 pm / 9:05 pm)
   Answer: 7:05 pm
13. On an analogue clock the short hand points at 4 and the long hand at 6. What time is it? (4:30 / 5:30 / 6:04 / 6:20)
   Answer: 4:30
14. On an analogue clock, when the long hand points to 9 it is quarter past.
   Answer: False
15. On an analogue clock, the long hand points to 11. How many minutes past the hour is it?
   Answer: 55
16. Which time is the same as quarter to 9 in the evening? (08:45 / 20:15 / 20:45 / 21:15)
   Answer: 20:45