Thinkabara

🧮 4th Grade · Math4.NF.B.4bUnit 8: Multiplying fractions by whole numbers

Whole number times a fraction

Google Classroom

🎯 Objective: Students multiply a whole number by a fraction (3 × 2/5).

Lesson outline

  1. Model 3 × 2/5 with three strips of 2/5.
  2. Discover n × a/b = (n × a)/b.
  3. Practice.
  4. Exit: 4 × 3/8.

Lesson 2 of 3 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

4.NF.B.4b

Common Core State Standards for Mathematics, Grade 4 — typical US scope & sequence

🏁 Unit goals

  • Multiply a fraction by a whole number
  • Solve problems with fractions and whole numbers

✅ 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: Equivalent fractions🎯 Practice: Decimals to hundredths📚 All 4th Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

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More lessons in “Multiplying fractions by whole numbers”

  1. Multiples of unit fractions
  2. Whole number times a fraction
  3. Fraction multiplication problems

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