# Ratios - 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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Ratios

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#### Presentation Transcript

Ratios

By

Edith Henderson

Beech Springs Intermediate School

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

## What is a ratio?

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

• 1/3

• 1 to 3

• 1:3

### Where Can We Find Ratios?

• Recipes

• Food labels

• Classrooms

• Scale Drawings

### 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”

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

• 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

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

### 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:

• www.animfactory.com