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Adding fractions with unlike denominators worksheets Grade 5

Add fractions by rewriting both with the least common denominator.

The front of the free adding fractions with unlike denominators worksheet

Free · Worked example · 48 problems · Answer key · US Letter

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How to do it

Find the least common denominator (LCD). Rewrite both fractions with it, then add.

35+14=1220+520=1720\dfrac{3}{5} + \dfrac{1}{4} = \dfrac{12}{20} + \dfrac{5}{20} = \dfrac{17}{20}rewrite with denominator 20

Example problems

  1. 29+16=\dfrac{2}{9} + \dfrac{1}{6} =
  2. 13+910=\dfrac{1}{3} + \dfrac{9}{10} =
  3. 18+56=\dfrac{1}{8} + \dfrac{5}{6} =
  4. 511+34=\dfrac{5}{11} + \dfrac{3}{4} =

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