Prime and Composite Numbers and Factors

Which of the following are factor pairs for 36?

• 2 x 18

• 3 x 13

• 4 x 9

• 6 x 6

• 8 x 4

Which list has only prime numbers?

• 2, 3, 4, 5

• 1, 5, 7, 9

• 2, 3, 5, 7

• 2, 4, 6, 8

Which list has only composite numbers?

• 1, 3, 4

• 2, 4, 6

• 4, 6, 8

• 5, 6, 8

How is a prime number different from a composite number?

• Prime numbers are smaller than composite numbers.

• Composite numbers are larger than prime numbers.

• All odd numbers are prime numbers.

• Prime numbers have only 2 factors, and composite numbers have more than 2 factors.

What makes a number a composite number?

• It only has 2 factors 1 and itself.

• It is an even number.
  It is an odd number.

• Is is an odd number.

• It has more than two factors.

Which of the following numbers is COMPOSITE?

• 2

• 37

• 41

• 4

Is 17 prime or composite?

• Prime

• Composite

Is 81 prime or composite?

• Prime

• Composite 

What are factors?

• The top number in a fraction.

• The numbers multiplied together to make a product.

• The bottom number in a fraction.

• Angles smaller than 90 degrees.

Are there any numbers that are neither prime nor composite?

• Yes

• No