Lesson plan

3. Write three-digit numbers in word form (FP)

  • From K-5 Math Companion Curriculum
  • Created by
  • Standards
  • Tags:
teaches Common Core State Standards 2.NBT.A.3 http://corestandards.org/Math/Content/2/NBT/A/3
teaches Common Core State Standards MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Represent three-digit numbers using word form.

This lesson helps to build procedural skills with writing three-digit numbers in word form. Base ten blocks and expanded notation are used here because they support understanding of the value of each digit in a number. This work develops students' understanding that there are a variety of equivalent ways to represent a number.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they rely on place value patterns to write numbers in word form.

Key vocabulary:

  • expanded form
  • hundreds
  • ones
  • tens
  • value
  • word form

Special materials needed:

  • base ten blocks
  • place value mat (optional)