Thinkabara

🧮 2nd Grade · Math2.NBT.B.8Unit 3: Place value to 1,000

10 more, 100 more

Google Classroom

🎯 Objective: Students mentally add or subtract 10 or 100 to a number from 100 to 900.

Lesson outline

  1. Use a hundreds chart and blocks.
  2. Find the pattern in the digits.
  3. Partners quiz with number cards.
  4. Exit: 100 more than 456; 10 less than 302.

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

2.NBT.B.8

Common Core State Standards for Mathematics, Grade 2 — typical US scope & sequence

🏁 Unit goals

  • Understand hundreds, tens and ones
  • Read and write numbers to 1,000 in standard, word and expanded form
  • Compare three-digit 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: Add & subtract within 100🎯 Practice: Place value to 1,000🖨️ Worksheet: Two-Digit Addition Within 100🖨️ Worksheet: Two-Digit Subtraction Within 100📚 All 2nd Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 2nd 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 “Place value to 1,000”

  1. Hundreds, tens and ones
  2. Counting within 1,000
  3. Three ways to write a number
  4. Compare three-digit numbers
  5. 10 more, 100 more

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