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Math / Fractions / Grade 5 / mf501

Add Fractions with Unlike Denominators

Rename fractions with common-sized parts before adding.

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5 questions0m 0s
Learn the skill

Find a common denominator. Rewrite both fractions as equivalent fractions with that denominator. Add numerators and keep the shared denominator, then simplify.

Worked example

1/3 + 1/4 = 4/12 + 3/12 = 7/12. Twelfths are common-sized pieces that can be counted together.

1. 1/2 + 1/4 = ?
2. 1/3 + 1/6 = ?
3. 2/5 + 1/10 = ?
4. 3/4 + 1/8 = ?
5. 1/2 + 2/3 = ?