Lesson plan

3. Use place value strategies to find multiple solutions (A)

teaches Common Core State Standards CCSS.Math.Content.2.NBT.B.5 http://corestandards.org/Math/Content/2/NBT/B/5
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
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Lesson objective: Apply an understanding of how to decompose numbers to help solve addition and subtraction problems.

This lesson provides an opportunity for students to apply their knowledge and understanding of using the place value system to add and subtract to a real-life situation. Students are asked to create an ordering sheet for the Smoothie Stand using limited information.

Key Concept students will use: 

  • An understanding of the place value system can help us fluently add and subtract numbers within 100.

Skills students will use:

  • adding and subtracting within 100 (Grade 2, Unit 1)
  • applying strategies to add and subtract within 100 (Grade 2, Unit 11)

Students engage in Mathematical Practice 1 (Make sense of problems and perservere in solving them) as they fluently add and subtract to find multiple solutions to a problem.

Key vocabulary: 

  • number line
  • addition
  • subtraction

Special materials needed:

  • smoothie order forms (can be found in additional materials)