Equivalent Ratios (6.RP.A.1 &.RP.A.3a)

What is a Ratio?

• Is a comparison of two quantities 
• To multiply two fractions 
• A number over another number
• Two decimals that can be multiplied

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

If I have the following ratio, do I need to scale up or down?
1                 2
---  =         ----
3               ?

• up (multiply)
• down (divide)

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

Solve for A in the table.

• A= 40
• A= 10
• A= 9
• A= 45

Tags

CCSS.6.EE.B.7

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

 In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15
• c=18
• c=21
• c=16

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

CCSS.6.EE.B.7

What value belongs where the A is?

• 16
• 19
• 21
• 18

Tags

CCSS.6.EE.B.7

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

The ratio of red paint to yellow paint in a mixture is shown in the double number line above. How many teaspoons of yellow paint are in 4 batches?

• 20

• 4

• 12

• 15

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

Refer to the double number line.
If Kim makes 8 loaves of bread, how many cups of raisins did she use?

• 4
• 12
• 16
• 24

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

If 30 kids in the class like grape juice, how many kids like pineapple juice?  Use the tape diagrams to answer.

• 4
• 30
• 70
• 40

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

The ratio of girls to boys is 3:8. If there are 48 boys, how many girls are there? Use the tape diagram to help you solve.

• 6

• 24

• 18

• 72

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

Which is the better buy? A 12-pack of Pepsi for $3.00 or a 6-pack for $1.80?

• The 12-pack.

• The 6-pack.

• They're the same.

• Neither, I prefer Coke.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3