Measures and time · Ages 11–12

Time zones worksheet

Part of: Working with time and time zones

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Measures and time · Ages 11–12

Numsprite
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Name:Date:Score:／48

Write each answer in the space. For word problems, show your working and write a sentence answer.

1.It is 19:55 in Hong Kong. London is 8 hours behind Hong Kong. In London it is hours minutes (24-hour clock).
Fill in each blank
Answer:
2.It is 01:50 in Hong Kong. Sydney is 2 hours ahead of Hong Kong. In Sydney it is hours minutes (24-hour clock).
Fill in each blank
Answer:
3.It is 14:00 in Hong Kong. Sydney is 2 hours ahead of Hong Kong. In Sydney it is hours minutes (24-hour clock).
Fill in each blank
Answer:
4.It is 08:40 in Hong Kong. London is 7 hours behind Hong Kong. In London it is hours minutes (24-hour clock).
Fill in each blank
Answer:
5.It is 19:15 in Hong Kong. London is 7 hours behind Hong Kong. In London it is hours minutes (24-hour clock).
Fill in each blank
Answer:
6.A traveller's watch still shows Hong Kong time, 20:50. The airport clock shows the local time, 13:50, on the same day, and the place is behind Hong Kong. How many hours behind Hong Kong is it?
Answer:
7.A traveller's watch still shows Hong Kong time, 19:55. The airport clock shows the local time, 17:55, on the same day, and the place is behind Hong Kong. How many hours behind Hong Kong is it?
Answer:
8.It is 21:00 at night in Hong Kong. Sydney is 3 hours ahead of Hong Kong. In Sydney it is hours minutes the next day (24-hour clock).
Fill in each blank
Answer:

9.It is 15:55 in Hong Kong and London is 8 hours behind, so it is 07:55 in London.
True or false?
Answer:
10.It is 18:35 on Tuesday in Hong Kong. New York is 13 hours behind Hong Kong. What day is it in New York?
- A. Tuesday
- B. Sunday
- C. Monday
- D. Wednesday
Choose the right answer
Answer:
11.It is 10:40 in Hong Kong and London is 7 hours behind, so it is 03:40 in London.
True or false?
Answer:
12.It is 11:15 on Wednesday in Hong Kong. New York is 12 hours behind Hong Kong. What day is it in New York?
- A. Wednesday
- B. Tuesday
- C. Thursday
- D. Monday
Choose the right answer
Answer:

13.When it is 03:50 on Sunday in Hong Kong, it is still 15:50 on Saturday in New York. How many hours is New York behind Hong Kong?
Working:
Answer:
14.A plane leaves London at 18:40, local time, and flies for 13 hours to Hong Kong. Hong Kong is 8 hours ahead of London. When it lands, the time in Hong Kong is hours minutes (24-hour clock).
Fill in each blank
Working:
Answer:
15.A football match in London kicks off at 13:15 on Monday, London time. London is 8 hours behind Hong Kong. Tsz-ching watches it live in Hong Kong. What day is it in Hong Kong then?
- A. Sunday
- B. Tuesday
- C. Monday
- D. Wednesday
Choose the right answer
Working:
Answer:
16.Ming's dad works in London and gets up at 08:20 every morning. London is 7 hours behind Hong Kong. To call him just as he gets up, Ming must call at hours minutes, Hong Kong time.
Fill in each blank
Working:
Answer:
17.A plane leaves Hong Kong at 11:50, Hong Kong time, and flies for 14 hours to London. London is 7 hours behind Hong Kong. When it lands, the local time in London is hours minutes (24-hour clock).
Fill in each blank
Working:
Answer:
18.A plane leaves London at 20:20, local time, and flies for 11 hours to Hong Kong. Hong Kong is 8 hours ahead of London. When it lands, the time in Hong Kong is hours minutes (24-hour clock).
Fill in each blank
Working:
Answer:

Show the answers and working

Time zones worksheet: Answers and working

1. 11, 55
London is behind, so subtract. Count back 8 hours from 19:55.
Behind means subtract: 19:55 − 8 hours = 11:55.
2. 3, 50
Sydney is ahead, so add. Count on 2 hours from 01:50.
Ahead means add: 01:50 + 2 hours = 03:50.
3. 16, 0
Sydney is ahead, so add. Count on 2 hours from 14:00.
Ahead means add: 14:00 + 2 hours = 16:00.
4. 1, 40
London is behind, so subtract. Count back 7 hours from 08:40.
Behind means subtract: 08:40 − 7 hours = 01:40.
5. 12, 15
London is behind, so subtract. Count back 7 hours from 19:15.
Behind means subtract: 19:15 − 7 hours = 12:15.
6. 7 hours
The place is behind, so its 13:50 is earlier than Hong Kong's 20:50. How many hours apart are they?
From 13:50 to 20:50 is 7 hours.
7. 2 hours
The place is behind, so its 17:55 is earlier than Hong Kong's 19:55. How many hours apart are they?
From 17:55 to 19:55 is 2 hours.
8. 0, 0
21:00 plus 3 hours goes past 24:00. However far past it goes is the time the next day.
21:00 + 3 hours goes past midnight, 24:00; take off 24 hours: 00:00 the next day.

9. True
London is behind: should the 8 hours be added or subtracted? Work it out and compare with 07:55.
London is behind, so subtract: 15:55 − 8 hours = 07:55.
10. A. Tuesday
Does 18:35 minus 13 hours go back past midnight? If so, it is the day before.
New York's time is Hong Kong's minus 13 hours: 05:35; going back past midnight means the day before.
11. True
London is behind: should the 7 hours be added or subtracted? Work it out and compare with 03:40.
London is behind, so subtract: 10:40 − 7 hours = 03:40.
12. B. Tuesday
Does 11:15 minus 12 hours go back past midnight? If so, it is the day before.
New York's time is Hong Kong's minus 12 hours: 23:15; going back past midnight means the day before.

Marking: 2 for the working, 1 for the answer, 1 for the sentence.

13. 12 hours
It is still Saturday in New York, so midnight lies between. Count in two pieces: 15:50 to 24:00, then to 03:50.
From 15:50 on Saturday to midnight, 24:00, is 8 hours 10 minutes; on to 03:50 on Sunday: 12 hours in all.
14. 15, 40
First find the London time on landing: 18:40 plus the 13 hours of flying.
Then change it to Hong Kong time, 8 hours ahead; past 24:00 it is the next day.
Add the flying time, then the time difference: 18:40 + 13 hours + 8 hours is 15:40 (past midnight, the next day).
15. C. Monday
Hong Kong is 8 hours ahead. Does 13:15 plus 8 hours go past midnight?
Hong Kong time = London time + 8 hours, which is 21:15; past midnight, it is the next day.
16. 15, 20
Hong Kong is 7 hours ahead of London. To turn London's 08:20 into Hong Kong time, add or subtract?
Hong Kong is 7 hours ahead of London, so add: 08:20 + 7 hours = 15:20.
17. 18, 50
First find the Hong Kong time on landing: 11:50 plus the 14 hours of flying.
Then change it to London time: London is 7 hours behind.
Add the flying time, then take off the time difference: 11:50 + 14 hours − 7 hours is 18:50.
18. 15, 20
First find the London time on landing: 20:20 plus the 11 hours of flying.
Then change it to Hong Kong time, 8 hours ahead; past 24:00 it is the next day.
Add the flying time, then the time difference: 20:20 + 11 hours + 8 hours is 15:20 (past midnight, the next day).

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