MEP Y7 Practice Book B
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14 Time and Timetables
14.1 Telling the Time
In this section we look at different ways of writing times; for example, ‘7:45’ is the
same time as ‘quarter to eight’.
On a clockface, this can be represented as
shown here:
Also remember that
one hour
=
60 minutes
so that
half an hour
=
30 minutes
quarter of an hour
=
15 minutes
three quarters of an hour
=
45 minutes
Example 1
Write each time using digits and show the position of the hands on a clockface:
(a) twenty five past eight,
(b) quarter to ten.
Solution
(a) Twenty five past eight using digits is
8:25
(a) Quarter to ten can be thought of as:
15 minutes to 10 o’clock
or
45 minutes past 9 o’clock
so, using digits, quarter to ten is
9:45
12
3
4
6
7
8
9
10 11 12
5
hour hand
minute
hand
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
MEP Y7 Practice Book B
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Example 2
Write each of the times shown on these clocks:
(i) in words, and (ii) using digits.
(a) (b) (c)
Solution
(a) (i) Five past four (ii) 4:05
(b) (i) Ten to three (ii) 2:50
(c) (i) Twenty five to six (ii) 5:35
Exercises
1. Write the times shown on each of these clocks in words and digits:
(a) (b) (c)
(d) (e) (f)
(g) (h) (i)
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
12
3
4
6
7
8
9
10 11 12
5
MEP Y7 Practice Book B
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2. Draw these times on clock faces:
(a) ten past five (b) ten to nine (c) quarter to seven
(d) quarter past twelve (e) half past ten (f) twenty to nine
(g) ten to two (h) twenty five to six (i) twenty past four
3. Draw these times on clock faces:
(a) 4:00 (b) 5:30 (c) 7:15
(d) 8:20 (e) 2:45 (f) 3:50
(g) 1:55 (h) 6:05 (i) 11:35
4. Write these times in words:
(a) 9:30 (b) 4:00 (c) 4:25
(d) 8:45 (e) 7:35 (f) 9:05
5. Write these times using digits:
(a) eight o’clock (b) quarter to seven
(c) ten past five (d) half past six
(e) ten to three (f) five to four
(g) twenty five to nine (h) twenty to three
6. This picture shows the time
on Vicki’s radio clock:
(a) Draw a picture to show where the hands would be on this clock:
12
3
4
6
7
8
9
10 11 12
5
(b) Write the time in words.
7:42
14.1
MEP Y7 Practice Book B
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7. Daniel’s digital watch has gone wrong and shows a grey blob instead of the
first digit of the minutes.
Use the ordinary clock to tell Daniel what the missing digit is for each of the
times shown below:
(a)
(b)
(c)
12
3
4
6
7
8
9
10 11 12
5
8
4
12
3
4
6
7
8
9
10 11 12
5
1
2
12
3
4
6
7
8
9
10 11 12
5
1
6
1
MEP Y7 Practice Book B
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(d)
8. Halim looks at his watch and sees that the time is 7:46.
(a) Write this time in words.
(b) What will be the time 10 minutes later?
9. A bus leaves school at five minutes past four and Tony gets off 20 minutes
later. What is the time when Tony gets off the bus? Write your answers in
words and in figures.
14.2 12- and 24-hour Clocks
The 24-hour clock system can be used to tell if times are in the morning or the
afternoon. Alternatively, times can be given as ‘a.m.’ or ‘p.m.’
Example 1
Write these times in 24-hour clock time:
(a) 3.06 a.m. (b) 8:14 p.m.
Solution
(a) As this is an ‘a.m.’ time it remains the same but with a zero in front of the 3,
0306
(b) As this is a ‘p.m.’ time, add 12 to the hours to give
2014
Example 2
Write these times using ‘a.m.’ or ‘p.m’:
(a) 1428 (b) 0742
12
3
4
6
7
8
9
10 11 12
5
0
4
1
14.1
MEP Y7 Practice Book B
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Solution
(a) As the hours figure, 14, is greater than 12, subtract 12 and write as a ‘p.m.’
time:
2:28 p.m.
(b) As the hours figure, 07, is less than 12, simply remove the zero and write as
an ‘a.m.’ time:
7:42 a.m.
Exercises
1. Convert these times to 24-hour clock times:
(a) 9:42 a.m. (b) 11:28 p.m. (c) 11:14 a.m.
(d) 7:13 p.m. (e) 9:21 p.m. (f) 4:18 p.m.
(g) 10:05 a.m. (h) 12:15 a.m. (i) 12:15 p.m.
2. Write these times in 24-hour clock time:
(a) quarter to eight in the morning, (b) ten minutes to midnight,
(c) ten past nine in the evening, (d) five to seven in the morning,
(e) quarter past five in the afternoon, (f) half past two in the afternoon.
3. Write these 24-hour clock times in 12-hour clock times, using ‘a.m.’ or
‘p.m.’:
(a) 1204 (b) 0822 (c) 1842
(d) 1330 (e) 1440 (f) 2305
(g) 1735 (h) 1605 (i) 0342
4. Write these 24-hour clock times in words, as in question 2:
(a) 1430 (b) 1555 (c) 0745
5. Insert ‘a.m.’ or ‘p.m.’ into each sentence so that it makes sense:
(a) Joshua woke up at 6:45.
(b) Miles came home from school at 3:55.
(c) Andy started his night shift at 10:15.
(d) Grace ate her lunch at 11:45.
(e) James went to bed at 8:55.
(f) Heidi cooked a meal at 5:15.
MEP Y7 Practice Book B
6. Here are the timings for a school day.
Convert them to 24-hour clock times.
7. A train leaves at 0020. Write this time in words.
8. Shamil leaves home at 0900 and returns 7 hours later. Write the time that
Shamil gets home in 24-hour clock time, and in 12-hour clock time using
‘a.m.’ or ‘p.m.’.
14.3 Units of Time
In this section we explore the different units of time.
Registration 8:55 a.m.
Lesson 1 9:05 a.m.
Lesson 2 10:05 a.m.
Lesson 3 11:05 a.m.
Lunch 12:05 p.m.
Lesson 4 1:05 p.m.
Lesson 5 2:05 p.m.
Day ends 3:05 p.m.
14.2
MEP Y7 Practice Book B
Example 1
How many hours are there in May?
Solution
Number of hours in May
=
31 24×
=
744 hours
Example 2
25 February is a Friday. What will be the date on the next Friday:
(a) if it is not a leap year,
(b) if it is a leap year?
Solution
(a) You could write out the next 7 days like this:
Friday 25
Saturday 26 or
