Adding Rational Expressions

Presentation

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Mathematics

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10th - 12th Grade

•

Medium

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CCSS

5.NF.A.1, HSA.APR.D.6, HSA.APR.A.1

Standards-aligned

LaShawne Long Myles

Used 55+ times

FREE Resource

6 Slides • 4 Questions

Adding Rational Expressions

Refresher: Adding and Subtracting Fractions

Must have common denominators.
Common denominators are found by determining the LEAST COMMON MULTIPLE between the denominators
In adding them, only add the numerators.
In subtracting them, subtract the numerators
Simplify!

Multiple Select

Check off ALL that is vital to add or subtrac;t fractions?

Add/Subtract denominators

Add/Subtract numerators

Find a common denominator using the Least Common Multiple

Find a common denominator using the Greatest Common Multiple

Adding Rational Expressions an Example

Watch the video and take note of how the probelm is solved".
https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:rational/x2ec2f6f830c9fb89:rational-add-sub-intro/v/adding-rational-expression-w-unlike-denominators
Open a search browser and type in "adding-rational-expression-w-unlike-denominators" Khan and watch the corresponding video.

Multiple Choice

Based on the video, what's the easiest way to find common denominators?

multiply the two denominators

multiply the two numerators

Multiple Choice

Based on the video, whatever you multiply the denominator of each rational expression by you multiplied...

the opposite by

the denomiator by

Multiple Select

Based on the video, Sal should have had...in the numerator.

8x^2

8x^3

8x^4

Now you try one!

Practice Problem

Add the given rational expressions

Practice Problem

Here's the solution! How did you do?

Adding Rational Expressions

Show answer

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