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Practice
Create a complete list of factors for the number below. State whether the number is prime or composite.a) List the factors of 18.
1, 2, 3, 6, 9, 18
18 is a composite number.
1, 2, 3, 6, 9, 18
18 is a composite number.
b) List the factors of 20.
1, 2, 4, 5, 10, 20
20 is a composite number.
1, 2, 4, 5, 10, 20
20 is a composite number.
c) List the factors of 72.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
72 is a composite number.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
72 is a composite number.
d) List the factors of 9.
1, 3, 9
9 is a composite number.
1, 3, 9
9 is a composite number.