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Mathematics

Ratios, rates, and percentages

Use proportional reasoning to compare quantities and interpret changes in percent.

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Where this chapter sits in the course

Lessons

Chapter 3 of 25 · 6 short lessons · 26 min
  1. 1Equivalent ratios4 min
  2. 2Rates and unit conversion4 min
  3. 3Proportional relationships4 min
  4. 4Percentages and percentage change4 min
  5. 5Successive percentage changes4 min
  6. 6Challenge: Ratios, rates, and percentages6 min

What you'll learn

  • Solve ratio, rate, and unit-conversion problems
  • Calculate and interpret percentage changes

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