Lesson plan

5. Using understanding of place value to compare decimals of different digits (FP)

teaches Common Core State Standards CCSS.Math.Content.5.NBT.A.3b http://corestandards.org/Math/Content/5/NBT/A/3/b
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Compare decimals with different numbers of digits using place value equivalency and placeholders.

This lesson helps to build procedural skill with comparing decimals. Place value charts are used here because they support student understanding of how place value influences the digits within a specific value. This work develops students' understanding that decimals with different numbers of digits can be compared.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they use place value charts, their understanding of place value and placeholders to compare decimals with different numbers of digits.

Key vocabulary:

  • compare
  • decimal
  • equal to
  • equivalency
  • greater than
  • less than
  • place value
  • place value chart
  • placeholder
  • tenths
  • hundredths
  • thousandths

Special materials needed:

  • scratch paper and copies of place value chart, as needed