Counting Problems

Solving these percent problems is a matter of counting. Pupils find percents by counting the number of events that meet the criteria and the total number of possibilities. Participants create the ratio and convert it to a percent to finish the 19th installment in a 20-part series.

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CCSS: Designed
Instructional Ideas

  • Use the lesson as an introductory to probabilities
  • Spend some time leading a discussion on how to organize the different combinations
Classroom Considerations

  • Assumes students can convert fractions to percents
Pros

  • The answer key contains the fractions that are converted to percents
  • Contains possible answers to discussion questions
Cons

  • None
Common Core