adding and subtracting fractions with uncommon denominators
Flashcard
•
Mathematics
•
5th Grade
•
Practice Problem
•
Hard
+2
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the first step in adding or subtracting fractions with uncommon denominators?
Back
Find a common denominator for the fractions.
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
2.
FLASHCARD QUESTION
Front
What is a common denominator?
Back
A common denominator is a shared multiple of the denominators of two or more fractions.
3.
FLASHCARD QUESTION
Front
How do you find the least common denominator (LCD) of two fractions?
Back
List the multiples of each denominator and find the smallest multiple that appears in both lists.
4.
FLASHCARD QUESTION
Front
What is the formula for adding two fractions with different denominators?
Back
(a/b) + (c/d) = (a*d + b*c) / (b*d) where b and d are the denominators.
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
5.
FLASHCARD QUESTION
Front
What is the formula for subtracting two fractions with different denominators?
Back
(a/b) - (c/d) = (a*d - b*c) / (b*d) where b and d are the denominators.
Tags
CCSS.7.NS.A.1C
6.
FLASHCARD QUESTION
Front
What do you do after finding a common denominator when adding or subtracting fractions?
Back
Convert each fraction to an equivalent fraction with the common denominator.
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
7.
FLASHCARD QUESTION
Front
What is the result of 5/12 + 1/3?
Back
3/4
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
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