1. Ratios
Lesson 6-1

2. Check Skills You’ll Need
Write each Fraction in Simplest Form:
1. 4/12 =
2. 18/27 =
3. 14/63 =
4. 3/48 =
1/3
2/3
2/9
1/16

3. CCS: 6.RP.1. Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities
Objectives:
Students will write ratios in three different ways
Students will write and find equal ratios
Students will write ratios in simplest form

4. Vocabulary A ratio is a comparison of two numbers by division.
Each number in a ratio is called a term.
An equal ratio is when two ratios name the same number

5. Ratios
A ratio is a comparison between two numbers by division.
It can be written in three different ways:
5 to 2
5 : 2 5 2

6. Equal Ratios
When two ratios name the same number, they are equal. It’s like writing an equivalent fraction.
20 : 30
Equal Ratios:
80 : 120
10 : 15
2 : 3

7. Ratios in Simplest Form
Ratios can be written in simplest form.
Divide both terms in the ratio by their GCF.
Example: 12 to 8
Divide by GCF
3 to 2

8. Classwork: Play these games from Academic Skill Builders to read, write and identify ratios:
Ratio Blaster
Ratio Martian
Ratio Stadium- Play with your friends!
HOMEWORK TIME: pg. 271, 2-48 EVEN