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What is the LCM of 2 and 9?
18
What is the LCM of 4 and 10?
20
What is the LCM of 3 and 5?
15
What is the GCF of 26 and 39?
13
What is a composite number?
a number with more than 1 factor pair
What is a prime number?
a number with only 1 factor pair (or only 2 factors)
What does the "C" in GCF stand for?
Common
What is the GCF of 30 and 12?
6
What is the GCF of 25 and 100?
25
Is the number 20 is divisible by 4?
yes
What is the GCF of 20 and 50?
10
What is the GCF of 12 and 28?
4
What is the GCF of 22 and 80?
2
Why is the number 2 so special?
2 is the only even prime number
What is the GCF of 13 and 17?
1
What is the GCF of 6 and 30?
6
What is the GCF of 10 and 20?
10
What is the prime factorization of 28?
2x2x7
What is the prime factorization of 12?
2x2x3
Is the number 11 a prime number?
yes
Is the number 20 a prime number?
no
Is the number 8 a prime number?
no
List all the factors of 12.
1, 2, 3, 4, 6,, 12
is 3 a factor of 51?
yes
Is 7 a factor of 56?
yes
Is 8 a factor of 24?
yes
Is 3 a factor of 10?
no
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