Calculate Percent of a Number Using a Proportion Model

This Calculate Percent of a Number Using a Proportion Model video also includes:

The Common Core is all about ratios and proportions, and this video uses that method to calculate percents. This is the second video in a series that organizes information from an ice cream poll into a proportion to find how many vanilla lovers make up 15 percent. The video uses multiplicative reasoning to find the answer; your learners may be more familiar with simplifying or cross multiplying. 

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CCSS: Designed
Instructional Ideas

  • Use the other videos in the series for more practice with proportions and percents. 
Classroom Considerations

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Pros

  • Reviews the importance of setting up the proportions correctly
Cons

  • Does not show cross product or reducing ratios to solve
Common Core