Finding Common Denominators
A Grade 4 math worksheet focused on understanding and finding common denominators for fractions.
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Finding Common Denominators Worksheet
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Read each question carefully and follow the instructions to find common denominators and compare fractions.
1. To add or subtract fractions, they must have a .
2. The common denominator is a common of all the denominators.
3. When you find a common denominator, you need to change both the denominator and the of the fraction.
4. Which of these is a common denominator for 1/2 and 1/3?
2
3
5
6
5. Find a common denominator for 1/4 and 2/6. Then rewrite both fractions with the common denominator.
6. The least common multiple (LCM) of two denominators is always their common denominator.
True
False
Match the fractions on the left with their equivalent fractions using a common denominator on the right.
7. 1/3
a. 2/8
8. 1/4
b. 4/12
9. 1/2
c. 3/6
10. Write an equivalent fraction for 3/5 and 2/3 using a common denominator.
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