Factors
Multiples
Prime/Composite?
Greatest Common Factors
Least Common Multiple
100
What are the factors of the number 20?
1, 2, 4, 5, 10, 20
100
Find the first 3 multiples of the number 20.
20, 40, 60...
100
Prime or Composite: 28
28 is COMPOSITE (factors = 1, 2, 4, 7, 14, 28)
100

18 and 24

6

100

4 and 10

20

200
True or False: 4 is a factor of 48.
True
200

What is a MULTIPLE?

Multiples are the numbers we find when we find the products of a specific number.

200
Prime or Composite: 23
23 is PRIME (Factors = 1, 23)
200

25 and 30

5

200

8 and 6

24

300
What are the factors of the number 24?
1, 2, 4, 6, 8, 12, 24
300
True or False: 4 is a multiple of 20.
FALSE. 4 is a FACTOR of 20.
300
What is a PRIME number?
A prime number has only 2 factors, 1 and itself
300

28 and 35

7

300

3 and 7

21

400
What are FACTORS?
Factors are the numbers multiplied together to find a product. Also acceptable: A factor is a number that fits evenly into another number.
400
Find the first 3 MULTIPLES of the number 16.
16, 32, 48...
400
Prime or Composite: 33
33 is composite (factors = 1, 3, 11, 33)
400

40 and 50

10

400

4 and 6

12

500
What are the factors of the number 36?
1, 2, 3, 4, 6, 9, 12, 18, 36
500

What are the first 3 MULTIPLES of the number 12?

12, 24, 36

500
The ONLY even prime number is ______
2
500

32 and 64

32

500

9 and 15

45

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