Unit 2 Test Review

Laney is counting by 8s. She lists the numbers 8, 16, and 24. Some other numbers Laney could list are ________ and ________.

• 2 and 4

• 16 and 32

• 40 and 49

• 32 and 64

The number 6 is a multiple of 3.

• True

• False

The number 8 has 4 factors.

• True

• False

Ms. Gutzman has 36 markers. She wants to put the same number of markers into containers. Which list shows all the possibilities for the number of markers Ms. Skipper could place in each container?

• 1,2,3

• 1,2,3,4,6,9,12,18,36

• 2,3,4,6,9,12,18

• 2,3,4,6,9,12,18,32,36

List the first five multiples of 8.

• 1,2,4,8

• 8,16,25,32,40

• 8,16,24,31,40

• 8,16,24,32,40

1 and 7 are...

• factors of 7

• multiples of 7

• factors of 1

• multiples of 14

A prime number is...

• a number that has only one factor.
• a number that has at least two factors.
• a number that has more than two factors.
• a number that has only two factors.
  (1 and itself)

Which number is NOT prime?

• 3
• 7
• 17
• 21

All the factors of 15 are:

• 1, 2, 3, 5, 13, 15 
• 1, 15
• 1, 6, 9, 15
• 1, 3, 5, 15

A number having more than two factors is called

• Prime

• Composite

• Factor

• Multiple