Subtract Fractions with Unlike Denominators

Grade Levels
Common Core Standards
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1.58 MB   |   53 pages

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Subtract Fractions with Unlike Denominators

I used this PowerPoint in my classroom over two days in a very similar manner as my Add Fractions with Unlike Denominators PowerPoint.

On the first day I reviewed subtracting fractions with like denominators. I focused on vocabulary like common multiples, least common multiples, and common denominators. I used the foldable vocabulary page. We did the slides that had practice problems for like denominators.

On the second day we began the challenge of subtracting fractions with different denominators. I used the foldable page that taught the steps for subtracting fractions with unlike denominators. This included a review of simplifying fractions and problems with answers that needed to be simplified.

During both days I had the students do the practice problems on their white boards.

The Powerpoint breaks each topic into step by step instructions and allows the students to attempt the skill on their paper, white board, or on the provided foldables. Two Foldables can be printed from the Powerpoint so students can keep track of the steps, attempt an example, and write down the strategy.

I showed this Powerpoint on my Smart Board.

Slide Breakdown:
2-11 Vocabulary
12-23 Subtract Fractions with Like Denominators
24-49 Subtract Fractions with Unlike Denominators
50-51 Teachers Resources
52 Foldable Steps to Add Fractions with Unlike Denominators
53 Foldable Vocabulary Handout

Common Core Standards Addressed:
Fifth Grade Common Core Standards5.NF.1
Use equivalent fractions as a strategy to add and subtract fractions.
Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators.

After introducing Adding and Subtracting Fractions with the PowerPoints, I followed up with independent practice using my Add and Subtract Fractions with Different Denominators Bundle which contains :
Least Common Multiple
Find a Common Denominator Using Equivalent Fractions
Add Fractions with Unlike Denominators
Subtract Fractions with Unlike Denominators
Total Pages
53
Answer Key
Does Not Apply
Teaching Duration
90 Minutes

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Subtract Fractions with Unlike Denominators
Subtract Fractions with Unlike Denominators
Subtract Fractions with Unlike Denominators
Subtract Fractions with Unlike Denominators