Prime or Composite
Is 29 prime or composite? Explain how you know.
Prime, because there is only one set of factor pairs.
2,4,6,8,10,12,14 are all multiples of...
2
Tell all the factor pairs of 24
1x24, 2x12, 3x8, 4x6
True or False
15 is a multiple of 3
True 5x3=15
If you have 50 cards and 5 players will everyone get an even number of cards?
Yes
10 cards each
Is 27 prime or composite? Explain how you know.
Composite, because there are 2 factor pairs
1x27 and 9x3
5,10,15,20,25 are all multiples of...
5
Tell all the factor pairs of 10
1x10 and 2x5
True or False
16 is a factor of 8
False
If you have 50 cards and 3 players will everyone get an even number of cards?
No, every person would get 16 cards with 2 extra cards left over.
Is 30 Prime or Composite? Explain how you know.
Composite. 1x30, 2x15, 3x10
18,27,36,45 are all multiples of...
9
Tell all the factor pairs of 30
1x30, 2x15,3x10
True or False
80 is a multiple of 4
True
20x4=80
If you have 50 cards and 4 players will everyone get an even number of cards?
No, everyone will get 12 cards with 2 cards left over.
Is 47 Prime or Composite? Explain how you know.
Prime
60,72,84,96 are all multiples of ...
12
Tell all the factor pairs of 45
1x45, 5x9,
True or False
The only factor pair of 49 is 1x49
False
1x49 and 7x7
If you have 100 cards and 5 players will everyone get an even number of cards?
Yes, every player will get 20 cards.
5x20=100
Is 127 Prime or Composite? Explain how you know
Prime. 1x127
21,28,35,42 are all multiples of...
7
Give all the factor pairs of 7
1x7
True or False
The factor pairs of 12 are 1x12, 2x6, and 3x4
True
If you have 100 cards and 4 players will everyone get an even number of cards?
Yes, every player gets 25 cards.
4x25=100