Factor pairs
What are the factor pairs of 18?
1 x 18, 2 x 9, 3 x 6,
What are the multiples of 4 up to 40?
4, 8, 12, 16, 20, 24, 28, 32, 36, 40
What is a factor?
The small numbers that we multiply to get a BIG number.
5
Prime. 1 x 5
63
Composite. 1 x 63, 3 x 21, 7 x 9
What are the factor pairs of 27?
1 x 27, 3 x 9
What are the first 5 multiples of 7?
7, 14, 21, 28, 35
What is a multiple?
A multiple is the BIG numbers we land on we skip count.
15
Composite. 1 x 15. 3 x 5.
59
Prime. 1 x 59
What are the factor pairs of 63?
1 x 63, 3 x 21, 7 x 9
What are the multiples of 9 up to 63?
9, 18, 27, 36, 45, 54, 63
What is an array?
An array is a group of objects that we put into equal rows and columns.
29
Prime. 1 x 29.
43
Prime. 1 x 43
What are the factor pairs of 24?
1 x 24, 2 x 12, 3 x 8, 4 x 6
What are the multiples of 8 up to 48?
8, 16, 24, 32, 40, 48
What is a prime number?
A number whose only factors are 1 and itself
Ex: 1 x 13 = 13
25
Composite. 1 x 25, 5 x 5.
34
Composite. 1 x 34, 2 x 17,
What are the factors of 36?
1, 2, 3, 4, 6, 9, 12, 18 36
What are the multiples of 9 up to 72?
9, 18, 27, 36, 45, 54, 63, 72
What is a composite number?
A number that has more than one-factor pair.
Ex: 1 x 10 = 10, 2 x 5 = 10
50
Composite. 1 x 50, 2 x 25, 5 x 10.
60
Composite. 1 x 60, 2 x 30, 3 x 20, 4 x 15, 5 x 12, 6 x 10