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6.01 Units of time

Worksheet
Units of time
1

Convert:

a

6 minutes into seconds

b

660 seconds into minutes

c

5 hours into minutes

d

11.5 hours into minutes

e

360 minutes into hours

2

Add:

a

7 hours 7 minutes +\,11 hours 34 minutes

b

7 hours 59 minutes +\,12 hours 11 minutes

c

5 hours 10 minutes +\,20 minutes

d

3 hours 3 minutes +\,3 hours 29 minutes

e

2 hours 50 minutes +\,3 hours 40 minutes

3

Subtract:

a

11 hours -\,43 minutes

b

11 hours 16 minutes -\,5 hours

c

4 hours 10 minutes -\,35 minutes.

d

6 hours 10 minutes -\,2 hours 30 minutes.

e

10 hours 43 minutes -\,2 hours 29 minutes.

The 24 hour clock
4

Convert the following into 24-hour time:

a

11:26 pm

b

11:33 am

c

12:56 am

d

5:32 pm

5

Convert the following into 12-hour time:

a

20:59

b

10:44

c

23:10

d

03:40

6

How many hours and minutes left until midnight if the time is 16:50?

7

For each of the following, write the new time in 24-hour form:

a

4 hours after 16:28

b

7 hours after 22:53

c

12 hours before 9:57

d

13 hours before 10:43

8

Express the following analog time in 24-hour form: twenty past one in the afternoon

9

A clock shows the following time: 19:39. State whether each of the following denotes an equivalent time:

a

39 minutes past 7 in the morning

b

39 minutes past 7 in the afternoon

c

19 minutes past 9 in the morning

d

39 minutes past 9 in the afternoon

10

What time is shown on this clock?

11

What time is shown on this clock?

Write your answer in 24-hour time.

Applications
12

A train ride between two cities takes 9 hours and 57 minutes. If you leave one city at 23:44, at what time will you arrive at the other city?

Write your answer in 24-hour time.

13

James leaves home at 2 pm and gets home at 5 pm. How many hours was James out?

14

Luke starts school at 9 am and finishes at 3 pm. How many hours is Luke at school each day?

15

Sharon starts watching a movie at half past eleven am, which goes for 2 hours and 30 minutes.

What time will it be when the movie finishes? Write your answer using 12-hour time.

16

Joe went to a movie at 11:50 am. The movie went for 1 hour and 10 minutes.

What time will it be when the movie finishes? Write your answer using 12-hour time.

17

Valentina starts work at 7 am and finishes work at 5:30 in the evening. How many hours is Valentina at work each day?

18

A cyclist covers 2 times the lap of a track in 26 minutes and 57 seconds. Calculate the duration of one complete lap. Give your answer in seconds.

19

A match of hockey begins at 7:31 pm and finishes at 8:55 pm. If the half-time break goes for 15 minutes, find the duration of one half of hockey.

20

A song clip starts playing at 7:55 pm and finishes at 8:11 pm. How long is the song clip in minutes?

21

In a relay of four runners, Grace ran for 1:46 (1 minute and 46 seconds), Jess ran for 1:18, Dana ran for 1:16 and Emma ran for 1:42. Calculate their total time for the relay.

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MS11-3

solves problems involving quantity measurement, including accuracy and the choice of relevant units

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