IM Unit 1 Review

A number that only has 2 factors.

• Prime

• Composite

A number that has more than 2 factors.

• Prime

• Composite

Which of the following is a prime number?

• 6

• 7

• 18

• 27

• 39

Which of the following numbers is a COMPOSITE number?

• 81

• 23

• 5

• 61

Which of the following is a COMPOSITE number?

• 73

• 65

• 37

• 97

True or False: 15 is a multiple of 3

• True

• False

True or False: 26 is a multiple of 4

• True

• False

True or False: the only factor pair of 49 is 1 and 49

• True

• False

Answer explanation

The factor pairs of 49 are:

1 x 49

7 x 7

Select one factor pair of 84

• 5 x 12

• 2 x 42

• 9 x 4

• 25 x 4

Elijah Received some cartons of eggs that came with 6 eggs per carton.

Select the number that he COULD have.

• 12

• 15

• 5

• 9