Topic 7

Margie has 64 rectangular stepping stones to arrange in an array in her backyard. Which of the following are possible arrays Margie can make with the stamps? Select all that apply.

• 2 x 32

• 3 x 21

• 4 x 16

• 6 x 8

• 8 x 8

What are all of the factors of 64?

• 1, 2, 8, 32, 64

• 1, 2, 4, 16, 32, 64

• 1, 2, 4, 8, 16, 32, 64

• 1, 2, 3, 4, 8, 16, 32, 64

Which of the following statements is true?

• 64 is a prime number because prime numbers have exactly one factor pair.

• 64 is a prime number because prime numbers have more than one factor pair.

• 64 is a composite number because composites have exactly one factor pair.

• 64 is composite because composites have more than one factor pair.

Which statement is true?

• The only factors of 4 are 4 and 1.

• The only factors of 5 are 5 and 1.

• The only factors of 16 are 16 and 1.

• The only factors of 18 are 18 and 1.

5 is a ______ number.

• composite

• prime

29 is a ______ number.

• composite

• prime

32 is a ______ number.

• composite

• prime

41 is a ______ number.

• composite

• prime

33 is a ______ number.

• composite

• prime

27 is a ______ number.

• composite

• prime