Factors
List the factors of 9
1,3,9
List the first 5 multiples of 5
5,10,15,20,25
GCF stands for...
Greatest Common Factor
The LCM stands for the ...
Lowest Common Multiple
20 ÷ 5 × 2 =
8
What are the factors of 18?
1,2,3,6,9,18
List the 3rd multiple of 8
24
The GCF of 6 and 9 is
3
The lowest common multiple of 6 and 9 is...
18
3 × 6 − 2 =
16
Is 27 a prime number or composite?
composite
List the multiples of 7. Is 32 a multiple of 7?
7,14,21,28,35
No
The GCF of 10 and 15 is...
5
The lowest common multiple of 10 and 15 is...
30
(5 + 15) − (3 + 7) =
10
What is a prime number?
A number that has exactly 2 factors. One and itself.
9,18,27,36,45,54,63,72,81,90,99,108
Yes
The GCF of 6 and 20 is...
2
The lowest common multiple of 6 and 20 is...
60
39 − 9 ÷ 3 × 2 =
33
What are the factors of 99?
1,3,9,11,33,99
Hunter works at Starbucks every 3rd day and Ali works at Starbucks every 5 day. What day will they work together?
3,6,9,12,15,18
5,10,15,20
Day 15.
The GCF of 18 and 24
6
Find the GCF and LCM of 12 and 36.
GCF- 12
LCM- 36
13