Adding and subtracting fractions

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a fraction?
Back
A fraction represents a part of a whole and is expressed as a ratio of two integers, with a numerator (top number) and a denominator (bottom number).
2.
FLASHCARD QUESTION
Front
What does it mean to add fractions?
Back
Adding fractions involves combining two or more fractions to find a total. This often requires finding a common denominator.
3.
FLASHCARD QUESTION
Front
What is a common denominator?
Back
A common denominator is a shared multiple of the denominators of two or more fractions, allowing them to be added or subtracted.
4.
FLASHCARD QUESTION
Front
How do you find a common denominator for 3/7 and 2/21?
Back
The least common multiple (LCM) of 7 and 21 is 21, which can be used as the common denominator.
5.
FLASHCARD QUESTION
Front
What is the sum of 3/7 and 2/21?
Back
The sum is 11/21.
6.
FLASHCARD QUESTION
Front
What is the first step in adding fractions with different denominators?
Back
The first step is to find a common denominator.
7.
FLASHCARD QUESTION
Front
How do you convert 4/6 to have a common denominator with 1/2?
Back
Convert 4/6 to 2/3, which has a common denominator of 6 with 1/2.
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