Ratios That Describe Parts of a Whole

Ratio

• 1. the numerical part of a rate. For the ratio a:b, the unit rate is the quotient of a/b.

• 1. a way of comparing quantities. Can compare part to part or part to whole. Uses language like “for every” or “for each”.

• 1. a number that names equal parts of a whole. A fraction names a point on the number line and can also represent the division of two numbers.

• 1.  meaning “for each” or “for every”. The word per can be used to express unit rate such as $2 per pound.

Numerator

• 1.  the value you need to find to solve a problem. Usually represented with a variable

• 1. the number above the line in a fractions that tells the number of equal parts that are being described.

• 1.  the number below the line in a fraction that tells the number of equal parts in the whole.

• 1. a part of numbers (x,y) that describes the location of a point in the coordinate plane.

Ms. Davis makes a fruit salad using only bananas, blueberries, and strawberries. The ratio of banana to blueberries to strawberries in her fruit salad is 4 cups to 5 cups to 2 cups.

What is the ratio of blueberries to the rest of the fruit salad?

• 5 to 7

• 4/11

• 5/11

• 2 to 11

Write how to find the proportion of

2:8 :: 25:625

(Do not give space first right the means than the extremes.)

Mathematical Equivalence

ON

Label the picture.

(Arrange everything in 1 straight line in the below.)

b

c

d

a

Extremes

Extremes

Means

Means

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

What is the ratio of girls who chose soccer to girls who chose basketball?

• 6 girls chose soccer for every 7 girls chose basketball.

• 7 girls chose soccer for every 6 girls chose basketball.

• 6 girls chose basketball for every 7 girls chose soccer.

• 6 girls chose soccer for every 5 girls chose basketball.

Which of the following options is a real life example of a ratio?

• 12 noodles

• 4 meatballs : 1 cup of sauce

• 1 jar of sauce

• 15 desserts

When looking at Gene's Movie Collection, what does the ratio 38:40 describe?

• The number of adventure, horror, or documentary movies Gene has compared to the total amount of movies.

• The number of drama and comedy movies Gene has compared to the number of horror and sci-fi movies he has.

• The amount of horror or comedy movies Gene has.

• All of the movies that aren't documentary compared to the total amount of movies Gene has.

When looking at Recess Choices, what type of ratio is 14:40

• Part to Part

• Part to Whole

• Whole to Part