Thinkabara

🧮 5th Grade · Math5.NBT.B.7Unit 4: Operations with decimals

Multiplying decimals by decimals

Google Classroom

🎯 Objective: Students multiply two decimals and place the decimal point by reasoning.

Lesson outline

  1. Shade 0.3 × 0.4 on a hundredths grid = 0.12.
  2. Estimate to place the decimal point (1.2 × 0.6 is a bit more than half of 1.2).
  3. Practice.
  4. Exit: 1.2 × 0.6.

Lesson 3 of 6 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.NBT.B.7

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

🏁 Unit goals

  • Add, subtract, multiply and divide decimals to hundredths
  • Explain the reasoning used

✅ 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: Decimals: all four operations📚 All 5th Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 5th 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 “Operations with decimals”

  1. Adding and subtracting decimals
  2. Multiplying decimals by whole numbers
  3. Multiplying decimals by decimals
  4. Dividing decimals by whole numbers
  5. Dividing by decimals
  6. Decimal word problems

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