Download presentation

Presentation is loading. Please wait.

Published byPeregrine Greer Modified over 8 years ago

1
Proportional Reasoning Section 2.3

2
Objectives: To solve problems using proportional reasoning. Use more than one method to solve proportional reasoning problems.

3
What Is A Proportion? Proportions are two ratios set equal to each other Example:

4
How Do You Know If A Proportion Is True? The cross-products of the ratios must be equal. Ex. Cross-Product… 4 x 10 = 40 and 5 x 8 = 40 It is a proportion!

5
Proportions & Variables Proportions may contain a variable. Example:

6
Solving Proportions That Contain Variables To solve for the variable you… CROSS MULTIPLY Step 1 Step 2 Step 3 Step 4 Step 5

7
Your Turn… Solve the following proportion:

8
Word Problems Using Proportions There is a ratio of 8 boys to 12 girls in a classroom. How many girls would there be if there were 12 boys in the classroom?

9
Homework 2.3 Proportions Worksheet

Similar presentations

© 2023 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google