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Adding and subtracting three fractions worksheets Grade 5

Find one common denominator for three fractions, then add or subtract.

The front of the free adding and subtracting three fractions worksheet
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Free · Worked example · 32 problems · Answer key · US Letter

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How to do it

Find one common denominator for all three fractions.

12+34−16=612+912−212=1312\dfrac{1}{2} + \dfrac{3}{4} - \dfrac{1}{6} = \dfrac{6}{12} + \dfrac{9}{12} - \dfrac{2}{12} = \dfrac{13}{12}one common denominator: 12
1312=1112\dfrac{13}{12} = 1\tfrac{1}{12}

Example problems

  1. 13+16+78=\dfrac{1}{3} + \dfrac{1}{6} + \dfrac{7}{8} =
  2. 13+23+16=\dfrac{1}{3} + \dfrac{2}{3} + \dfrac{1}{6} =
  3. 58+38+58=\dfrac{5}{8} + \dfrac{3}{8} + \dfrac{5}{8} =
  4. 23+16+23=\dfrac{2}{3} + \dfrac{1}{6} + \dfrac{2}{3} =

Adding and subtracting fractions

  1. Adding fractions with related denominators
  2. Subtracting fractions with related denominators
  3. Adding fractions with unlike denominators
  4. Subtracting fractions with unlike denominators
  5. Adding mixed numbers
  6. Subtracting mixed numbers
  7. Subtracting mixed numbers with borrowing
  8. Adding and subtracting three fractions