Ratios

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Ratios
By Edith Henderson Beech Springs Intermediate
School Grade 5 http//www.spart5.k12.sc.us/
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What is a ratio?

• A ratio is two numbers that are used to compare
  two quantities.

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Three Ways To Write Ratios

• 1/3
• 1 to 3
• 13

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Where Can We Find Ratios?

• Recipes
• Food labels
• Classrooms
• Scale Drawings

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Lets Make A Ratio
What is the ratio of pairs of white tennis shoes
to pairs of black tennis shoes? Write the answer
in three ways.
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Lets Make A Ratio Answer
White pairs of tennis shoes 5 Black pairs of
tennis shoes 4 Ratio is 5/4 or 5 to 4 or 54.
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Black and White Shoes

• What is the ratio of white to black shoes?
• What is the ratio of black to white shoes?
• What is the ratio of black shoes to all shoes?

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Trivia Games
What is the ratio of games won by Sean to games
won by Sonia on Day 3?
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Standards AddressedData Analysis and Probability

• Formulate questions that can be addressed with
  data and collect, organize, and display relevant
  data to answer them.
• Compare data sets collected in different ways to
  address a given question.

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Graphics Courtesy Of

• www.animfactory.com