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Lesson Plan

7. Rounding to estimate using addition (A)

teaches Common Core State Standards 3.2C
teaches Common Core State Standards 4.NS.9
teaches Common Core State Standards MAFS.4.NBT.1.3
teaches Common Core State Standards CCSS.Math.Content.4.NBT.A.3
teaches Common Core State Standards CCSS.Math.Practice.MP8
teaches Common Core State Standards 4.2D
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Lesson objective: Apply rounding to approximate a total.

This lesson provides an opportunity for students to apply their knowledge and understanding of rounding to a real-life situation. Students are asked to round three numbers and add the results to get a total approximation of visitors at an amusement park.

Key Concept students will use: 

  • Rounding to approximate multiple values

Skills students will use:

  • Rounding numbers to the thousands
  • Adding whole numbers 

Students engage in Mathematical Practice 8 (look for and express regularity in repeated reasoning) as they use the structure of the base-ten system to generalize their strategies to round a six digit number to different places.   

Key vocabulary: 

  • approximate
  • exact
  • round

Special materials needed:

  • paper
  • pencil
Related content

Appears in

Applying place value concepts in whole number addition and subtraction

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