How much did it change? The presenter works two problems to demonstrate how to calculate percentage loss and increase. Pupils have one learning exercise to practice similar problems on their own.

Concepts

percent change, percent decrease, percent increase, percent problems, percents

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Additional Tags

math

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Instructional Ideas

• Collect sales flyers showing the original price and the sale price of items to have class members calculate the percentage change
• Have individuals come up with scenarios that would fit the different types of percentage change problems

Classroom Considerations

• Assumes the class knows how to change fractions to percents

Pros

• Includes an answer sheet that shows the work
• Shows which problems require a calculator and which do not use a calculator

Cons

• None

Common Core

SL.7.2 7.RP.A.3 MP5 MP6 MP7