Factors
What are factors?
Factors are numbers that you can multiply together to get another number.
What are multiples?
Multiples are the result of multiplying a number by an integer.
What is a composite number?
A composite number is a number that has more than two factors.
What does GCF stand for?
Greatest Common Factor.
What does LCM stand for?
Least common Multiple
Find the factors of 12
1, 2, 3, 4, 6, 12.
What are the first five multiples of 3?
Answer: 3, 6, 9, 12, 15.
Is 7 Prime?
Yes
What is the GCF of 8 and 12?
4
What is the LCM of 3 and 4?
12
What is the greatest factor of 20?
20
What is the least common multiple of 4 and 5?
20
Explain why 9 is not a prime number.
9 has factors other than 1 and itself (1, 3
Find the GCF of 18 and 24.
6
Find the LCM of 5 and 10.
10
What are the factors of 30?
1, 2, 3, 5, 6, 10, 15, 30.
Find the multiples of 6 up to 60.
6, 12, 18, 24, 30, 36, 42, 48, 54, 60.
List the first 5 prime numbers
2, 3, 5, 7, 11
Explain how to find the GCF.
By listing the factors of each number and finding the largest one they have in common.
Explain How to find LCM
By listing the multiples of each number and finding the smallest one they have in common.
Name all the factors of 36.
1, 2, 3, 4, 6, 9, 12, 18, 36.
Is 2,5,8,10,12 The first 5 multiples of 2?
No
Explain why 15 is a composite number.
15 has factors other than 1 and itself (1, 3, 5, 15)
What is the GCF of 15, 30, and 45?
15.
What is the LCM of 6, 8, and 12?
24