Review: Unit 1- Ratios-Rates and Fractions, Decimals, & Percents

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)

Tags

CCSS.4.OA.B.4

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4

Which number is composite?

• 36

• 3

• 11

• 31

Tags

CCSS.4.OA.B.4

Which number is prime?

• 32

• 27

• 19

• 45

Tags

CCSS.4.OA.B.4

What are the factors of 24?

• 1, 2, 3, 4, 5, 6, 7, 8, 24

• 1, 3, 4, 6, 8, 10, 24

• 1, 2, 3, 4, 6, 8, 12, 24

• 1, 2, 4, 8, 12, 24

Tags

CCSS.4.OA.B.4

These numbers are all multiples of.......

21, 28, 35, 42

• 4

• 8

• 7

• 9

Which sentence accurately represents the following ratio:

• The ratio of moons to suns is 4 to 8

• There are 4 moons for every 8 suns

• There are 4 moons for every 2 suns

• The ratio of suns to moons is 2:1

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Select ALL the ratios that are equivalent to 16 : 6

• 3 to 8

• 32 : 12

• 4 to 2

• 8 to 3

Tags

CCSS.6.RP.A.3A

Patrick has 2 black, 3 red, and 5   white toy cars. What is the ratio of red toy cars to all the toy cars? 

• 3:5
• 1:3
• 3:11
• 3:10

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

If Kevin is mixing 35 oz of yellow paint, he will need how many oz of red?

• 21 oz

• 24 oz

• 33 oz

• 18 oz