Grade 5 Prime Numbers and Factors Quiz

What is a prime number?

• A number that has exactly two factors: 1 and itself.

• A number that is divisible by many other numbers.

• A number that is greater than zero.

• A number that ends with the digit 5.

What is a multiple?

• A number that can be divided by another number without a remainder.

• The product of two or more numbers.

• Only composite numbers in a given number.

• The sum of two numbers.

Which of the following is a prime number?

• 1

• 4

• 7

• 9

Which of the following statements about the number 1 is true?

• 1 is a prime number.

• 1 is a composite number.

• 1 is a universal number

• 1 is a factor of every number.

Which of the following numbers is even and prime?

• 1

• 2

• 4

• 6

Which of the following statements is true?

• All prime numbers are odd.

• 2 is the only even prime number.

• 1 is considered a prime number.

• Every composite number has only one prime factor.

What is the prime factorization of 21?

• 3 × 7

• 2 × 10.5

• 1 × 21

• 21^1

Which of the following numbers is a prime number greater than 10?

• 11

• 12

• 14

• 15

Which of the following statements is false?

• All even numbers are composite.

• 2 is the only even prime number.

• Every prime number is greater than 1.

• Composite numbers have more than two factors.

• 18 = 2 x 2 x 3

• 18 = 2 x 9

• 18 = 2 x 3 x 3