4, 6, 8 , 10
Multiples of 2
Is 4 a prime number?
Composite.
1 x 4
2 x 2
Is 8 a composite number?
1 x 8
2 x 4
1 and 17 are the only factors of 17.
True!
50, 55, 60, 65, 70
Multiples of 5
What are the factors of 12?
1 x 12
2 x 6
3 x 4
Is 9 a prime number?
Composite.
1 x 9
3 x 3
Is 15 a composite number?
Composite!
1 x 15
3 x 5
1 is a prime number.
False!
1 is not prime or composite!
16, 24, 32, 40
Multiples of 8
What are the factors of 9?
1 x 3
3 x 3
Is 13 a prime number?
Prime.
1 x 9
Is 7 composite?
Prime!
1 x 7
(2 and 6) and (4 and 12) are the only factor pairs for 12.
False!
1 x 12
2 x 6
3 x 4
21, 28, 35, 42
Multiples of 7
What are the factors of 49?
1 x 49
7 x 7
Is 21 a prime number?
1 x 9
3 x 7
Composite!
1 x 87
3 x 29
11 is a prime number.
True!
1 x 11
24, 36, 48, 60
Multiples of 12
What are the factors of 36?
1 x 36
2 x 18
3 x 13
4 x 9
6 x 6
Is 99 a prime number?
Composite.
1 x 99
3 x 33
Is 2 composite?
1 x 2
2 is a composite number!
FALSE!!
Two is the only even number that is PRIME! It only has one factor pair - 1 x 2.