Lesson plan

9. Using Multiplication Arrays to Solve Division Problems (FP)

teaches Common Core State Standards CCSS.Math.Content.5.NBT.B.5 http://corestandards.org/Math/Content/5/NBT/B/5
teaches Common Core State Standards CCSS.Math.Content.5.NBT.B.6 http://corestandards.org/Math/Content/5/NBT/B/6
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Lesson objective: Solve division problems using multiplication arrays.

This lesson helps to build procedural skill with division. Arrays are used because they support the idea that there is an inverse relationship between multiplication and division. This work develops students' understanding that we can relate the dividend, divisor, and quotient in a division problem to parts of an array model.

Students engage in Mathematical Practice 8 (Look for regularity in repeated reasoning) as they solve division problems using array models.

Key vocabulary:

  • array
  • dividend
  • division
  • divisor

Special materials needed:

  • base ten blocks (optional)