1. HCF & LCM – Prime Factorisation – Card Complete & Match
In this activity students work individually or in groups to
match questions and answers.
‘Quick Cut’ – Choose the questions/slides you wish to use and delete others.
Sets of questions can then be easily guillotined to save time.
One-sheet sets of cards are also included for students to cut out themselves.

2. Printing To print handouts from slides -
Select the slide from the left. Then click:
File > Print > ‘Print Current Slide’
To print multiple slides -
Click on a section title to highlight all those slides,
or press ‘Ctrl’ at the same time as selecting slides to
highlight more than one. Then click:
File > Print > ‘Print Selection’
To print double-sided handouts -
Highlight both slides before using ‘Print Selection’.
Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

3. 3 Match each Venn diagram with a Highest Common Factor or
Lowest Common Multiple.
Complete each diagram with a number in every box. 3

4. Half Answers

8. LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120K 24 30
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120
LCM = 120

9. LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240J 80 48 3
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240
LCM = 240

10. LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600
150
120 2 2
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600
LCM = 600

11. LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162I 81
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162
LCM = 162

12. HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9L 36 7
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9
HCF = 9

13. HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10D 30 50
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10
HCF = 10

14. HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12A 48 36
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12
HCF = 12

15. HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15G 60 5 3
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15
HCF = 15

16. LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96F 24 2 3 2
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96
LCM = 96

17. LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140E 2 2 5
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140
LCM = 140

18. HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14B 42 28
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14
HCF = 14

19. HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35
105 5 2
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35
HCF = 35

20. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
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