Multiples
List the first 10 multiples of 3
3, 6, 9, 12, 15, 18, 21, 24, 27, 30
What are the factors of 8?
1, 2, 4, and 8
13, 30, 49, 87
13
3, 23, 87, 29
87
Multiples
The numbers you get when you multiply a certain number by that number
List the first 6 multiples of 7
7, 14, 21, 28, 35, 42
What are the factors of 18?
1, 2, 3, 6, 9, and 18
35, 47, 60, 87
47
11, 47, 95, 97
95
Factors
Numbers you can multiply together to get a certain number
What are the first 5 common multiples of 5 and 10?
10, 20, 30, 40, 50
What are the factors of 31?
1 and 31
9, 31, 39, 44
31
7, 13, 29, 39
39
Prime Number
A number that only has 2 factors: 1 and itself
What is the lowest common multiple of 6 and 8?
24
What are the factors of 42?
1, 2, 3, 6, 7, 14, 21, and 42
25, 33, 71, 63
2, 23, 61, 65
65
Composite Number
A number greater than 2 than has 2 or more factors
What is the lowest common multiple of 36 and 54?
108
What are the factors of 67?
1 and 67
26, 35, 43, 39
43
33, 43, 53, 67
33
Common Multiple
A multiple that is shared by two or more numbers