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Unlike Denominators Fraction Operations

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Unlike Denominators Fraction Operations

Find common denominators when needed. Simplify each answer and show your work for calculation and word problems.

Find Common Denominators

1.What is the least common denominator of 1/5 and 1/8?
  • 13
  • 20
  • 40
  • 80
2.Rewrite 2/3 and 3/5 as equivalent fractions with denominator 15.
3.What is 1/4 + 2/3? Give your answer in simplest form.
  • 3/7
  • 11/12
  • 5/12
  • 7/12
4.What is 7/8 − 1/4? Give your answer in simplest form.
  • 6/4
  • 5/8
  • 3/8
  • 1/2

Add and Subtract Fractions

Show your steps and simplify each result.

5.Calculate 3/10 + 1/4.
6.Calculate 5/6 − 1/4.
7.Calculate 2/5 + 3/8.
8.Calculate 7/9 − 1/6.

Fraction Stories

Write a number sentence and show how you worked out each answer.

9.Zoe poured 1/4 cup of orange juice and 2/3 cup of apple juice into a pitcher. How many cups of juice did she pour in all?
10.Isabella biked 5/6 mile before lunch and 1/3 mile after lunch. How much farther did he bike before lunch?
11.Nina needs 3/4 cup of oats for a recipe and has already added 2/5 cup. How much more does she need?
12.A craft project uses 2/3 yard of blue ribbon and 3/8 yard of green ribbon. How many yards of ribbon are used altogether?

3 printable pages

  • Unlike Denominators Fraction Operations, page 1 of 3: Find Common Denominators, Add and Subtract Fractions

    Page 1

  • Unlike Denominators Fraction Operations, page 2 of 3: Fraction Stories

    Page 2

  • Unlike Denominators Fraction Operations, page 3 of 3: 12. A craft project uses 2/3 yard of blue ribbon and 3/8 yard of green ribbon. How many…

    Page 3

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