Ratio and Proportion Intro

Patrick has 2 black, 3 red, and 5 white toy cars. What is the ratio of red toy cars to all the toy cars?

• 3:5

• 1:3

• 3:11

• 3:10

Which of the following are ratios?

• 1:3

• 2:56

• 1.4:5

• 56%

Which of the following could be proportions?

• 0.8

• 45%

• 1:3

• 1.2

What fraction of the counters are blue?

• ¹/₄

• ³/₄

• ¹/₃

• ³/₁

What fraction of the counters are red?

• ¹/₄

• ³/₄

• ¹/₃

• ³/₁

The ratio of green counters to blue counters is 4 : 5

What fraction of the counters are green?

• ⁵/₄

• ⁴/₅

• ⁴/₉

• ⁵/₉

In a fruit bowl ³/₅ of the fruit are apples. The rest are oranges. What is the ratio of apples to oranges?

• 3 : 5

• 5 : 3

• 3 : 2

• 3 : 8

In a box of sweets ⁷/₁₀ of the sweets are red. The rest are purple. What is the ratio of red sweets to purple sweets?

• 3 : 7

• 7 : 3

• 3 : 10

• 7 : 10

In a box of sweets ¹/₄ of the sweets are green. The rest are orange.

What is the ratio of orange sweets to green sweets?

• 3 : 1

• 1 : 3

• 1 : 4

• 4 : 1

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