Shark Learning
Second/Fractions

➕ Adding Mixed Numbers

Students learn to add mixed numbers with like denominators. They practice adding the whole numbers and fractions separately to find the total sum.
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Study Guide

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Practice Questions

  1. 1 1/3 + 2 1/3 = ?
    Show answer

    3 2/3

  2. 3 1/5 + 1 2/5 = ?
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    4 3/5

  3. 2 2/7 + 4 3/7 = ?
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    6 5/7

  4. 5 1/4 + 2 1/4 = ?
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    7 2/4

  5. 1 3/8 + 1 2/8 = ?
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    2 5/8

Teacher Resources
Teaching Notes

Teach the strategy of grouping: Whole + Whole and Fraction + Fraction. Keep it simple initially without regrouping.

Vocabulary
Mixed Number: A whole number and a fraction together.
Improper Fraction: Numerator is larger than the denominator.
Common Mistakes
  • Forgetting to add the whole numbers.
  • Adding denominators.
  • Forgetting to add whole numbers
  • Adding denominators
  • Incorrect fraction addition
  • Mixing up numerator/denominator
Differentiation
SupportColor code whole numbers and fractions.
ChallengeIntroduce sums > 1 (regrouping).
Discussion Questions
  • Why do we add wholes and fractions separately?
  • Is 1 1/2 the same as 1 + 1/2?
  • When do we use mixed numbers in real life?
  • Why do denominators stay the same?
  • What if the fraction sum was 1 or more?
  • How is this like adding whole numbers?
Extension Activities
  • Word problems.
  • Create your own mixed number addition.
Parent Tip

Ask your child to add recipe amounts like 1/2 cup and 1/4 cup.

Learning Path
Skill Cluster

Number Sense: Fractions

Estimated Time

20 minutes

Skills Practiced
Add mixed numbers