3 Numbers/Primes
Find the GCF:
14, 49, 7
7
What does LCM stand for?
Lowest/Least Common Multiple
Greatest Common Multiple
What is a prime?
A prime is a number that can only be multiplied by 1 and itself.
What is the divisibility rule for 6?
If the number is divisible by 2 and 3
Find the LCM:
5, 4, 10
20
Find the LCM:
5 and 3
15
Find the GCF:
2 and 4
2
What is a composite?
A composite is a number that has multiple ways to be multiplied.
What is the divisibility rule for 3?
If the sum of the numbers is divisible by 3
Find the GCF:
7, 28, 98
7
Find the LCM:
7 and 8
56
Find the GCF:
12 and 4
4
Which is a prime?
11, 14, 15, 16
11
What numbers are 12 divisible by? (Hint: 1 is in the answer)
1, 2, 3, 4, 6
Is 230265 prime or composite?
Find the LCM:
14 and 6
42
Find the GCF:
15 and 8
1
Which is a composite?
13, 17, 19, 20
20
What is 30 divisible by?
1, 2, 3, 5, 6, 10
Find the LCM:
9, 27, 2
54
Find the LCM:
26 and 12
156
Find the GCF:
21 and 168
21
Is 1 prime or composite?
Neither
What is 56 divisible by?
1, 2, 4