Thinkabara

🧮 5th Grade · Math5.NF.A.1Unit 5: Adding & subtracting fractions

Common denominators

Google Classroom

🎯 Objective: Students rename fractions with a common denominator to add and subtract.

Lesson outline

  1. List multiples to find a common denominator.
  2. Rename, then add or subtract.
  3. Practice.
  4. Exit: 5/6 − 1/4.

Lesson 2 of 5 in this unit. In the Lesson Planner this lesson takes 1–3 class periods depending on your timetable: day 1 introduce & model, then practice, small-group reteach and a quick check.

📐 Standard

5.NF.A.1

Common Core State Standards for Mathematics, Grade 5 — typical US scope & sequence

🏁 Unit goals

  • Add and subtract fractions and mixed numbers with unlike denominators
  • Estimate with benchmark fractions

✅ Check for understanding

End with the exit ticket in the outline. Sort answers into got it / almost / not yet and start the next lesson with a 5-minute reteach for the “not yets”.

Practice & resources on Thinkabara

🎯 Practice: Fractions: add, subtract, multiply➗ Fraction calculator📚 All 5th Grade skills🎮 Learning games⚡ Capy Live class quiz

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More lessons in “Adding & subtracting fractions”

  1. Unlike denominators with models
  2. Common denominators
  3. Mixed numbers
  4. Estimate with benchmarks
  5. Fraction word problems

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