Adding Fractions (Unlike Denominators)
Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions to produce a common denominator
Typical age: 10–11 years
“If a recipe uses 2/3 of a cup of one ingredient and 3/4 of another, can your child add those fractions together — even though the denominators are different?”
0 / 3 mastered
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Needs first
- Simplifying FractionsREQUIRED
Finding common denominators requires simplification/common multiples skills
- Mixed numbers and improper fractions
Mixed number operations benefit from mixed/improper conversion
- Adding fractions (different denominators)REQUIRED
Unlike-denominator add/sub extends Y5 add/sub with related denominators
Unlocks next
- Fraction Word ProblemsREQUIRED
Word problems require the computational skill of adding/subtracting unlike-denominator fractions
- Mixed & Improper FractionsREQUIRED
Four operations with all number types builds on adding/subtracting fractions with unlike denominators
- Understanding fractionsREQUIRED
Solving problems with fraction data requires unlike-denominator addition
- One Quantity as a FractionREQUIRED
Adding/subtracting fractions with unlike denominators is needed when comparing fractional parts