Instructions
A ratio is a way to compare two quantities or amounts. For example, if a bakery has 5 chocolate cupcakes and 3 vanilla cupcakes, the ratio of chocolate to vanilla cupcakes is 5 to 3. You can write a ratio in three different ways:
- Using the word "to" → 5 to 3
- Using a colon → 5:3
- As a fraction → 5/3
Read each problem carefully and use your knowledge of ratios to answer the questions.
Part 1: At the Park
Imagine you are at a park. You look around and see the following:
6 dogs
10 kids playing
3 picnic benches
5 adults
Use the information above to write a ratio for each comparison. You can use any of the three ways to write the ratio.
- What is the ratio of dogs to kids?
- What is the ratio of picnic benches to adults?
- What is the ratio of kids to all the people at the park (kids and adults combined)?
Part 2: Ratio Language
Now, describe the relationship between two quantities by writing a complete sentence. Use the phrase "For every... there are..."
Example: If there are 2 teachers and 20 students, you could write: "For every 2 teachers, there are 20 students."
- In a video game, you collected 7 gold coins and 11 silver coins. Describe the relationship between gold coins and silver coins.
- A soccer team scored 4 goals and had 2 goal-saving blocks. Describe the relationship between goals scored and blocks.
- A craft box contains 15 crayons and 8 markers. Describe the relationship between crayons and markers.
Part 3: Three Ways to Write It
Read the scenario and write the requested ratio in all three forms (a to b, a:b, and a/b).
- An online playlist has 12 pop songs and 7 country songs. What is the ratio of pop songs to country songs?
- A recipe for a smoothie calls for 2 bananas and 9 strawberries. What is the ratio of strawberries to bananas?
- In a pencil case, there are 6 pens and 3 pencils. What is the ratio of pencils to the total number of writing tools?
_______ _______ _______
_______ _______ _______
_______ _______ _______
Answer Key
Part 1: At the Park
- 6 to 10 (or 6:10, or 6/10)
- 3 to 5 (or 3:5, or 3/5)
- 10 to 15 (or 10:15, or 10/15) (Note: There are 10 kids + 5 adults = 15 people in total)
Part 2: Ratio Language
(Answers may vary slightly but should express the same relationship.)
- For every 7 gold coins, there are 11 silver coins.
- For every 4 goals scored, there were 2 goal-saving blocks.
- For every 15 crayons, there are 8 markers.
Part 3: Three Ways to Write It
- 12 to 7 12:7 12/7
- 9 to 2 9:2 9/2
- 3 to 9 3:9 3/9 (Note: There are 6 pens + 3 pencils = 9 writing tools total)