Ratios - Introduction

What is a Ratio?

• Is a comparison of two quantities

• To multiply two fractions

• Strictly a fraction

• Two decimals that can be multiplied

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7
• 7 to 5
• 5 to 12
• 7 to 12

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2 to 5
• 5 to 3
• 3 to 5
• 5 to 2

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

In the fruit bowl there are 4 apples, 2 bananas, and 5 pears.  What is the ratio of pears to ALL fruit?

• 5:4
• 5:11
• 2:5
• 6:5

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.1

Which represents the relationship of oranges to fruit?

• 2:6
• 2:4
• 4:6
• 4:2

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

3 ways to write a ratio is.....

• read, write, demonstration

• to solve

• using "to", using a colon, and as a fraction

• very important

Tags

CCSS.6.RP.A.1

How many different ways can you write a ratio

• 1
• 2
• 3
• 4

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

A ratio can be written as all the ways below EXCEPT which one?

• 3=4

• 3:4

• 
  

  $\frac{3}{4}$

• 3 to 4

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.1

There are 13 boys and 10 girls in the classroom.  What is the ratio of boys to girls?

• 10 to 13
• 23 to 13
• 13 to 10
• 23 to 10

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

The pet shop has 2 dogs, 4 cats, and 5 hamsters. What is the ratio of dogs to all pets?

• 2:4
• 2:5
• 2:11
• 11:2

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2