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Factors
Multiples
Greatest Common Factor
Least Common Multiple
Vocab/ Prime and Composite
100
List all of the factors of 32.
1, 2, 4, 8, 16, and 32
100
List 3 multiples of 8 that are less than 50.
8, 16, 24, 32, 40, 48
100
What is the greatest common factor of 12 and 15
3
100
What is the least common multiple of 3 and 7?
21
100

Numbers that can be multiplied together to get a product

FACTOR

200
List all of the common factors of 12 and 20.
1, 2, and 4
200
List 3 common multiples of 2 and 6.
6, 12, 18, 24, 30, 36, 42, 48, etc.
200
What is the greatest common factor of 24 and 20?
4
200
What is the least common multiple of 4 and 9?
36
200

A number whose only factors are one and itself.

PRIME

300
List all of the factors of 42.
1, 2, 3, 6, 7, 14, 21, 42
300
List all the common multiples of 6 and 8 that are less than 50.
24 and 48
300
What is the greatest factor of 16 and 36?
4
300
What is the least common multiple of 2, 3, and 5?
30
300

This number is prime. 

A. 48 

B. 66 

C. 10 

D. 23

D. 23

400
List all of the factors of 52.
1, 2, 4, 13, 26, and 52
400
List 4 multiples of 7 greater than 10 but less than 50.
14, 21, 28, 35, 42, 49
400
What is the great common factor of 50, 35, and 15?
5
400
What is the least common multiple of 20 and 12?
60
400

DAILY DOUBLE !!!!!!!

Look at the following number

765 - Is it Prime or Composite? - How do you know?

Composite. Since it ends in a 5, 5 has to be a factor. Therefore, it has more than two factors, making it Composite.

500
List all of the common factors of 24 and 36.
1, 2, 3, 4, 6, 12
500

List all the common multiples of 5 and 20 that are less than 75.

20, 40, 60

500
What is the greatest common factor of 64 and 80?
16
500

What is the least common multiple of 4, 6, and 9 ?


36

500

Look at the following numbers :

372 , 199, 685, 290

Which number is Prime. EXPLAIN how you know. 

199 is Prime. I know this because:

372 is even which means two is a factor.

685 ends in a 5, making 5 a factor. 

290 ends in a zero which means 10 and 2 are factors.