Ratios

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# What is a ratio - PowerPoint PPT Presentation

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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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.

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.

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?