Ratios Units

Simplify the ratio of
20 to 25

• to 5

• to 5

• to 5

• to 5

Which ratio is equivalent to 12:20

• 20:12

• 2:3

• 3:5

• 3:10

What is a Ratio?

• Is a comparison of two quantities 

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one 

• Two decimals that can be multiplied

What is the ratio of red apples to green apples

• 7 apples to 3 green

• 4 red apples to 7 apples

• 4 red apples to 3 green apples

• 3 green apples to 4 red apples

Which represents the relationship of oranges to total fruit?

• 2:6

• 2:4

• 4:6

• 4:2

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a Proportion

• If I told you then you wouldn't try it for yourself.

Solve the proportion:

• c = 4

• c = 8

• c = 14

• c = 10

The diagonal relationship, AKA "____ ________" or "means and extremes" is based on the fact that the numerator of one ratio multiplied by the denominator of the other ratio equals the product of the other numerator and denominator.

• Horizontal

• Vertical

• Cross Product

• Simply

Find the ratio of triangles to squares in the diagram above.

• 2:1

• 1:2

• 2:2

• 1:1

Mr. Wright has 7 boys and 9 girls. What is the ratio of girls to boys?

• 7 to 9

• 9 to 7