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Lesson Plan

13. Use ratio tables to determine what percent one number is of another

teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards CCSS.Math.Content.6.RP.A.3c http://corestandards.org/Math/Content/6/RP/A/3/c
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Lesson objective: Use ratio tables to organize values and practice scaling the values up or down to calculate percent.

Students practice calculating percent using values in a ratio table. Ratio tables are used here because a ratio table can support scaling the ratio values up or down to determine a factor or multiple of 100. This work develops students' understanding that percent is a special ratio comparing one number with 100.

Students engage in Mathematical Practice #7: Students look for and make use of structure as they interpret percent as a rate per 100 and examine the relationship among values.

Key vocabulary:

  • ratio table
  • scaling up
  • scaling down

Special materials needed:

  • graph paper
Related content

Appears in

Rates, including percent

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