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🧮 1st Grade · Math1.NBT.B.2Unit 6: Counting & place value to 120

Different ways to make a number

Google Classroom

🎯 Objective: Students show the same number as tens and ones in more than one way.

Lesson outline

  1. Show 35 as 3 tens 5 ones and as 2 tens 15 ones.
  2. Trade a ten for 10 ones.
  3. Partners find two ways for three numbers.
  4. Exit: two ways to show 42.

Lesson 5 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

1.NBT.B.2

Common Core State Standards for Mathematics, Grade 1 — typical US scope & sequence

🏁 Unit goals

  • Count, read and write numbers to 120
  • Understand two-digit numbers as tens and ones

✅ 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: Place value to 120📚 All 1st Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 1st 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 “Counting & place value to 120”

  1. Counting to 120
  2. Groups of ten
  3. Tens and ones
  4. Teen numbers and decade numbers
  5. Different ways to make a number

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