Show:
Factors
Multiples
Prime/Composite?
Prime Factorization
Common Factors
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

Find the prime factors of 10

2 x 5 = 10

100

What are the common factors of 5 an 15?

1 and 5

200
True or False: 4 is a factor of 48.
True
200
What is a MULTIPLE?
Multiples are the numbers we find when we SKIP COUNT.
200
Prime or Composite: 23
23 is PRIME (Factors = 1, 23)
200

Find the prime factors of 16

2 x 2 x 2 x 2 = 16. OR 24 = 16

200

What are the common factors of 9 and 36?

1, 3 and 9

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

Find the prime factors of 36

2 x 2 x 3 x 3 = 36. OR 22 x 32 = 36

300

What is the lowest common factor of 32 and 36?

1

400

Do all numbers have a common factor? If so, what is it?

Yes. It is 1

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

True or False: We can use the number 1 when we find prime factors

False. 1 is NOT a prime or composite number. It is unique

400

What is the greatest common factor between 20 and 30?

10

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 36?
36, 72, 108...
500
The ONLY even prime number is ______
2
500

Find the prime factors for 144

2 x 2 x 2 x 2 x 3 x 3 = 144  OR. 24 x 32 = 144

500

What is the greatest common factor between 22 and 50?

2