Adding Fractions

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Add Fractions: Learn

How to Add Fractions with different denominators:

  • Rename the fractions using their Least Common Denominator (LCD)
  • Add the numerators of the fractions
  • Simplify the Fraction

Example: Add 2/9 + 3/12. The LCD is 36, so we can rename and add them as follows:

2 * 4
9 * 4
+
3 * 3
12 * 3
=
8
36
+
9
36
=
17
36

In this case, the fraction does not simplify, so 17/36 is the final answer.

Add Fractions: Practice

Add the fractions.

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State the answer as a simplified fraction, and not a mixed number.

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