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What is a ratio - PowerPoint PPT Presentation


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Ratios. By Edith Henderson Beech Springs Intermediate School Grade 5 http://www.spart5.k12.sc.us/. What is a ratio?. A ratio is two numbers that are used to compare two quantities. Three Ways To Write Ratios. 1/3 1 to 3 1:3. Where Can We Find Ratios?. Recipes Food labels Classrooms

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slide1

Ratios

By

Edith Henderson

Beech Springs Intermediate School

Grade 5

http://www.spart5.k12.sc.us/

what is a ratio

What is a ratio?

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

where can we find ratios
Where Can We Find Ratios?
  • Recipes
  • Food labels
  • Classrooms
  • Scale Drawings
let s make a ratio
Let’s 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.

let s make a ratio answer
Let’s 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 5:4.

black and white shoes
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?
trivia games
Trivia Games

What is the ratio of games won by Sean to games won by Sonia on Day 3?

standards addressed data analysis and probability
Standards Addressed:Data 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.
graphics courtesy of
Graphics Courtesy Of:
  • www.animfactory.com
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