Fractions Prerequisite Test

Which of the following statements is true about prime numbers?

• A prime number is divisible only by 1 and itself.

• A prime number can be evenly divided by numbers other than 1 and itself.

• Prime numbers are all even numbers.

• Every natural number greater than 1 is a prime number.

Which is prime number?

• 6

• 1

• 2

• 9

Which of the following numbers is a prime number?

• 8

• 9

• 11

• 12

How can you describe a composite number in terms of its factors?

• A number with exactly two distinct positive factors: one and the number itself.

• A number with no positive factors other than one and the number itself.

• A number with more than two distinct positive factors.

• A number that has no factors other than its own square root.

Which number is a composite number?

• 1

• 3

• 5

• 8

What are the prime factors or prime factorization of 24?

• 3, 3, 4

• 2, 2, 4

• 2, 2, 6

• 2, 2, 3

What is the greatest common factor (GCF) of 12 and 18?

• 9

• 3

• 2

• 6

What is the greatest common factor (GCF) of 20 and 30?

• 10

• 5

• 2

• 20

What is the least common multiple (LCM) of 4 and 6?

• 8

• 12

• 10

• 14

What is the least common multiple (LCM) of 5 and 7?

• 12

• 15

• 35

• 21