Mathematics·Fractions·procedural
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
Suggested ages 10–11
Learning journey
Your child is mastering advanced fraction operations — adding, subtracting, and multiplying fractions with different denominators, dividing with fractions, and solving real-world problems using visual models and mathematical reasoning.
Evidence of understanding
- Compute 2/3 + 5/4 by converting to twelfths: 8/12 + 15/12 = 23/12
- Subtract 1 3/5 from 3 1/4 using a common denominator
- Explain the strategy of finding a common denominator and verify using a visual model
Assessment prompt
If a recipe uses 2/3 of a cup of one ingredient and 3/4 of another, can Adding Fractions (Unlike Denominators) add those fractions together — even though the denominators are different?
Standards alignment
No external standards are linked to this topic.