Grade 8: The Learning Equation Math 12.02 Adding and Subtracting Fractions (Like Denominators) 


The student will:
Adding Proper/Improper Fractions with Like Denominatorsaddend + addend = sum 1. When the denominators are the same add the numerators together and place the sum over the like denominator. 2. Reduce to lowest terms 

Subtracting Proper/Improper Fractions with Like Denominatorsminuend  subtrahend = difference 1. When the denominators are the same subtract the subtrahend numerator from the minuend numerator and place the difference over the like denominator. 2. Reduce to lowest terms 
Select Add OPERATION. Read the message before you close the direction box. The focus for this activity are on fractions with like denominators. Create two fractions that have the same denominator. The output at the bottom of the screen will show the solution with fraction strips and "pencil and paper" method.
Richard E. Rand's web site, Visual Fractions, is a fantastic site for fraction investigation. The applets available on the site are very well designed and make fraction exploring fun. Permission was given to display an earlier version of the applet:
Adding Fractions with Same Denominators Instructions  A variety of answers is accepted.
Summary for adding fractions with like(common) denominators:

Subtracting Fractions with Unlike Denominators Instructions  A variety of answers is accepted. Summary for subtracting fractions with like(common) denominators:
Minuend and Subtrahend must be entered before the Explain button works. If you need help writing proper fractions, check out: Identify Fractions..

Review: Integer Bars (Cusenaire Rods): Learning Fractions  pictorially Pattern Blocks: Exploring Fractions with Shapes  pictorially Adding and Subtracting Fractions




sum, numerator, denominator, proper fraction, improper fraction, mixed number, equivalent fractions, simplest terms, greatest common factor (GCF).


Pre
requisite Skills:
Converting Fractions: Grade 7 Lesson 11.05 Converting Fractions: Grade 7 Lesson 11.05 Converting Fractions: Grade 7 Lesson 11.05
Converting Fractions: Grade 7 Lesson 11.05 Lesson on Factors and Greatest Common Factors


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