1. Primes, Factors & Multiples – Guess!
In this game, students compete in groups of 3+.
Taking it in turns, students read out the clues on a card and the first
student in the group to answer correctly gets a point.
If students guess incorrectly they should be out of that round.
Delete unwanted cards.
The cards are arranged to make it easy to guillotine sets for each group.

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. Guess!
Primes,
Factors &
Multiples ?

4. is a multiple of 7
is odd
5 is a factor
is less than 40 35

5. is a multiple of 9
is even
is a square number
is less than 45 36

6. 16 is a multiple of 4. is a square number is a multiple of 8
is less than 20 16

7. is a multiple of 9.
has only 3 factors
is odd
is less than 30 27

8. has only 2 factors
is greater than 20
is less than 27 23

9. is a square number
is less than 50
7 is a factor 49

10. is a multiple of 8
is a square number
is less than 100 64

11. is a prime number
is less than 40
is a factor of 39 13

12. is a prime number
is greater than 45
is less than 50 47

13. 24 is a multiple of 6 is a multiple of 4 is a multiple of 3
is less than 40 24

14. 4 is a factor of 12 is a factor of 16 is a square number
is greater than 1 4

15. is a multiple of 9
is a factor of 36
is a square number 9

16. 30 is a multiple of 6 is a factor of 60 is greater than 25
is smaller than 50 30

17. is a prime number
is greater than 100
the digits add to 2
101

18. is greater than 20
is less than 22 21

19. 100 is a multiple of 5 is a multiple of 10 is a square number
is less than 200
100

20. is a factor of 15
is a multiple of 5 15

21. 25 has only 3 factors is greater than 20 is a multiple of 5
is less than 30 25

22. has only 3 factors
is greater than 40
is a multiple of 7 49

23. is odd
is greater than 20
is a factor of 42
is a multiple of 7 21

24. is a prime number
is less than 3 2

25. is a square number
is greater than 50
is less than 80 64

26. is a factor of 29
is not 29 1

27. is an odd number
is a prime number
is a factor of 24 3

28. is a factor of 45
is odd
is a multiple of 5
is less than 30 15

29. is a factor of 60
is even
is a multiple of 6
is less than 30 12

30. is a cube number
is a multiple of 9
is less than 50 27

31. is even
is a factor of 16
is a cube number
is greater than 1 8

32. is odd
is greater than 100
is a cube number
is a factor of 250
125

33. is a cube number
is a square number
is less than 100 64

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