1. Created by Mr.Lafferty Maths Dept
Time
Time Intervals (Counting Method)
Timetables
Minutes and Seconds
Stopwatch Time
16-Jun-18
Created by Mr.Lafferty Maths Dept

2. Created by Mr.Lafferty Maths Dept
Starter Questions
Q1. Calculate
Q2. Round to 1 decimal place
Q3. How many minutes in 3hours
Q4. The answer to the question is 180. What is the
question.
16-Jun-18
Created by Mr.Lafferty Maths Dept

3. Created by Mr.Lafferty Maths Dept
Counting Method
Learning Intention
Success Criteria
We are learning the counting method to find the difference between two times including over night.
1. Understand the counting method.
2. Find time differences between two times, showing all working.
16-Jun-18
Created by Mr.Lafferty Maths Dept

4. Created by Mr.Lafferty Maths Dept
Counting Method
When working out time difference we will use the
Counting Method. This method will always work.
Example : Find the time difference between
08 32 hrs and hrs
Hrs Mins
nearest
hour
hours
What’s left 28 13
08 32
09 00
22 00
22 07 + 07
28 mins
13 hrs
7 mins
13 35
16-Jun-18
Created by Mr.Lafferty Maths Dept

5. Created by Mr.Lafferty Maths Dept
But there are
60 minutes = 1hour
82 mins = 1hr 22mins
Counting Method
A bus leaves Kirkintilloch Main Street at hrs
and arrives in Aberdeen at hrs.
How long was the journey.
nearest
hour
hours
What’s left
Hrs Mins 58
22 02
23 00
03 00
03 24 4
58 mins
4 hrs
24 mins + 24
5hrs 22mins
4 82
16-Jun-18
Created by Mr.Lafferty Maths Dept

6. Using Timetables
0639
0234
0156
2354
2257
2125
1642
1214
1148
0943
0854
0725
arrive
leave
Kingsbridge
Birmingham
Carlisle
Glasgow
(a) Write in 12 hour time when morning bus left Carlisle.
9.43am
(b) Write in 12 hour time when evening bus left Carlisle.
11.54pm

7. Created by Mr.Lafferty Maths Dept
Time
Now try TJ2b
Ex 1
Ch3 (page 21)
16-Jun-18
Created by Mr.Lafferty Maths Dept

8. Created by Mr.Lafferty Maths Dept
Starter Questions
16-Jun-18
Created by Mr.Lafferty Maths Dept

9. Using Timetables
0639
0234
0156
2354
2257
2125
1642
1214
1148
0943
0854
0725
arrive
leave
Kingsbridge
Birmingham
Carlisle
Glasgow
(a) Write in 12 hour time when morning bus left Carlisle.
9.43am
(b) Write in 12 hour time when evening bus left Carlisle.
11.54pm

10. + Using Timetables But there are 60 minutes = 1hour
74 mins = 1hr 14mins
Using Timetables
0639
0234
0156
2343
2257
2125
1642
1214
1148
0943
0854
0725
arrive
leave
Kingsbridge
Birmingham
Carlisle
Glasgow
(c) How long did the evening journey take in total.
nearest
hour
Hrs Mins
hours
What’s left 35 35
21 25
22 00
06 00
06 39 8
35 mins
8 hrs
39 mins + 39 14
9hrs 14mins

11. Created by Mr.Lafferty Maths Dept
Time
Now try TJ2b
Ex 2
Ch3 (page 23)
16-Jun-18
Created by Mr.Lafferty Maths Dept

12. Created by Mr.Lafferty Maths Dept
Starter Questions
16-Jun-18
Created by Mr.Lafferty Maths Dept

13. Created by Mr.Lafferty Maths Dept
Time
Minutes and Secs
Learning Intention
Success Criteria
We are learning to add and subtract minutes and seconds.
1. Add and subtract minutes and seconds.
16-Jun-18
Created by Mr.Lafferty Maths Dept

14. Adding & Subtracting Time
60 secs = 1min
To add and subtract time we must remember
(a) Add 4 mins 30secs to 2 mins 25 mins
Always layout in columns
Mins Secs
4 30 +
2 25
6 55
16-Jun-18
Created by Mr.Lafferty Maths Dept

15. Adding & Subtracting Time
60 secs = 1min
80 secs
=1min 20 secs
To add and subtract time we must remember
(a) Add 3 mins 35 secs to 9 mins 45 mins
Always layout in columns
Mins Secs
3 35 +
9 45
=13min 20 secs
16-Jun-18
Created by Mr.Lafferty Maths Dept

16. Adding & Subtracting Time
60 secs = 1min
To add and subtract time we must remember
(a) Subtract 2 mins 35secs from 5 mins 40 mins
Always layout in columns
Mins Secs 3 1
5 40 -
2 35
3 05
16-Jun-18
Created by Mr.Lafferty Maths Dept

17. Adding & Subtracting Time
60 secs = 1min
To add and subtract time we must remember
(a) Subtract 3 mins 30secs from 7 mins 20 mins
Always layout in columns
Mins Secs 60 6
7 20 -
3 30
3 50
16-Jun-18
Created by Mr.Lafferty Maths Dept

18. Created by Mr.Lafferty Maths Dept
Time
Now try TJ2b
Ex 3
Ch3 (page 25)
16-Jun-18
Created by Mr.Lafferty Maths Dept

19. Created by Mr.Lafferty Maths Dept
Starter Questions
Level D
Q1. Calculate
Q2. Round to 1 decimal place 2.354
Q3. How many minutes in 1 hour
Q4. The answer to the question is 10. What is the
question.
16-Jun-18
Created by Mr.Lafferty Maths Dept

20. Created by Mr.Lafferty Maths Dept
Time
Minutes and Secs
Learning Intention
Success Criteria
We are learning to work out accuracy to 1 and 2 decimal places.
1. Round to 1 and 2 decimal places.
16-Jun-18
Created by Mr.Lafferty Maths Dept

21. Time www.mathsrevision.com Minute & Seconds
Rounding time to 1 or 2 decimal places is
just the same as rounding any number.
Example : Round the times to 1 and 2 decimals places
(a) secs
4.6 secs to 1 decimal place
4.57 secs to 2 decimal place
(b) secs
52.5 secs to 1 decimal place
52.46 secs to 2 decimal place
16-Jun-18
Created by Mr.Lafferty Maths Dept

22. Created by Mr.Lafferty Maths Dept
Time
Minute & Seconds
Note : In athletics the winner of a race corresponds to
the smallest time.
Example : In a race the times are as follows
Mark sec, Caitlin 10.05sec, Owen sec,
Amy sec and Euan sec.
Work out who won the race and the order they came in.
1st Owen sec
2nd Caitlin 10.05sec
4th Amy sec
3rd Euan sec
5th Mark sec
16-Jun-18
Created by Mr.Lafferty Maths Dept

23. Time www.mathsrevision.com Minute & Seconds
Example : In a race Katrina beat Daniel by 0.53 sec. Daniel’s time was secs.
What was Katrina’s time ?
Katrina won therefore her time will be 0.53 less.
16-Jun-18
Created by Mr.Lafferty Maths Dept

24. Time Now try TJ2b Ex 4 Ch3 (page 26) www.mathsrevision.com
Have you updated your Learning Log ?
Time
Now try TJ2b
Ex 4
Ch3 (page 26)
16-Jun-18
Created by Mr.Lafferty Maths Dept