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.

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’.

Guess! Primes, Factors & Multiples ?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

is greater than 20 is less than 22 21

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

is a factor of 15 is a multiple of 5 15

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

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

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

is a prime number is less than 3 2

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

is a factor of 29 is not 29 1

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

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

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

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

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

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

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

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