Least Common Denominator (LCD) Worksheet

Grade 5 Math worksheet focusing on finding the Least Common Denominator (LCD) for fractions, including practice problems and real-world application.

Grade 5 Math FractionsLeast Common Denominator

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Includes

Fill in the Blanks3 Short AnswerMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.5.NF.A.1

Topics

mathfractionsleast common denominatorLCDgrade 5

8 sections · Free to use · Printable

Least Common Denominator (LCD) Practice

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Date:

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Read each question carefully and follow the instructions. Show your work where indicated.

1. The Least Common Denominator (LCD) is the common multiple of the denominators of two or more fractions.

2. To add or subtract fractions with different denominators, you must first find the .

3. When you find the LCD, you are essentially finding equivalent fractions with a common .

Find the Least Common Denominator (LCD) for each pair of fractions.

4. 1/3 and 1/6

5. 2/5 and 3/10

6. 1/4 and 2/3

7. 3/8 and 1/2

8. What is the LCD of 1/2 and 3/4?

9. Which of these fractions has a denominator that is a multiple of 3 and 5?

1/10

2/15

3/12

4/20

10. Convert the fractions 1/4 and 2/5 to equivalent fractions using their LCD. Show your work.

11. Sarah ate 1/3 of a pizza and Tom ate 1/2 of the same pizza. To find out how much they ate together, what is the first step you need to take?

12. The LCD of 1/2 and 1/3 is 5.

True

False

13. To find the LCD, you can list the multiples of each denominator until you find the smallest common multiple.

True

False

14. Draw fraction bars to represent 1/3 and 1/4. Then, show how you would adjust them to use their LCD.