Thinkabara

🧮 3rd Grade · Math3.NBT.A.3Unit 6: Multiplying by multiples of 10 & patterns

Multiplying by multiples of 10

Google Classroom

🎯 Objective: Students multiply 9 × 80 using place value (9 × 8 tens).

Lesson outline

  1. Show 9 × 8 and 9 × 80 with base-ten rods: 9 groups of 8 tens = 72 tens.
  2. Record 9 × 80 = 9 × 8 × 10 = 720.
  3. Practice 4 × 30, 7 × 60, 5 × 90.
  4. Exit: 6 × 40 and 8 × 50.

Lesson 1 of 4 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

3.NBT.A.3

Common Core State Standards for Mathematics, Grade 3 — typical US scope & sequence

🏁 Unit goals

  • Multiply one-digit numbers by multiples of 10
  • Identify arithmetic patterns

✅ 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: Round to 10 and 100📚 All 3rd Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 3rd Grade Math to your free Lesson Planner: enter your timetable once and every period shows the next lesson, skipping weekends and school breaks.

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More lessons in “Multiplying by multiples of 10 & patterns”

  1. Multiplying by multiples of 10
  2. Patterns in the multiplication table
  3. Two-step word problems
  4. Reasonable answers

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