Adding Fractions with Unlike Denominators
Presentation
•
Mathematics
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5th Grade
•
Medium
+1
Standards-aligned
Gabrielle Burriss
Used 759+ times
FREE Resource
9 Slides • 6 Questions
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Adding Fractions with Unlike Denominators
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The Basics
Numerator: Top of fraction (dividend)
Denominator: Bottom of fraction (divisor)
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Add Fractions with Like Denominators
If denominators are the same... Add the numerators Denominator does not change
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Multiple Choice
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Subtract Fractions with Like Denominators
If denominators are the same, subtract the numerators
Denominator does not change
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Multiple Choice
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Why you need like denominators
1/2 + 1/4 is NOT 2/6 (or 2/4, or 2/2)
You need to obtain like denominators to add or subtract fractions
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Finding common denominators (multiples)
Identify the denominators
Write or think of the multiples for each number
Find the Least Common Denominator
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Multiple Choice
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Multiple Choice
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Remember: Unlike Denominators
Find Least Common Multiple of denominators
Multiply the numerator and denominator of each fraction by the multiple
Write the equivalent fractions
Add or subtract the numerators
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Example
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Multiple Choice
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Multiple Choice
Adding Fractions with Unlike Denominators
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