Ratios Double Number Lines

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

Ratios can be represented as... (Select ALL answers that apply!)

• A/B

• A to B

• A : B

A class has 15 boys and 20 girls. What is the boy:girl ratio in simplest form?

• 4 to 5

• 10 to 13

• 3:4

• 3:5

A pancake recipe calls for 7 eggs and 21 cups of flour. How many cups of flour would you need for a single egg?

The SuperBonanza ice cream sundae comes with three scoops of ice cream. Fill in the blanks in the double number-line.

b

c

a

d

e

4

12

15

9

7

There are 12 squares in a chocolate bar. Fill in the blanks in the double number-line.

a

d

c

b

5

72

6

7

A pizza is cut into twelve slices. How many slices are there in six pizzas?

A car has four wheels. How many wheels are there for four cars?

Aria and Aaron are helping their friend Sydney move. Aria can move one box for every three boxes that Aaron can move. If Aria moves three boxes, how many boxes can Aaron move?

A tub of yogurt costs $5. How much do nine tubs of yogurt cost?

• $55

• $45

• $40

• $50