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Ms. Drake 7th grade Math

Ms. Drake 7th grade Math. Percents Lesson 51 Percent of Increase or Decrease. Vocabulary. Interest Percent Percent of Change Percent of Decrease Percent of Increase Principal Simple Interest.

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Ms. Drake 7th grade Math

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  1. Ms. Drake 7th grade Math Percents Lesson 51 Percent of Increase or Decrease

  2. Vocabulary Interest Percent Percent of Change Percent of Decrease Percent of Increase Principal Simple Interest

  3. A percent can be used to describe an amount of change. The percent of change is the amount, stated as a percent, that a number increases or decreases.If the amount goes up, it is a percent of increase. If the amount goes down, it is a percent of decrease.

  4. Formula for the Percent of Change

  5. Find the Percent of Change

  6. Using Percent of Change The regular price of a portable CD player is $31.99. This week the CD player is on sale for 25% off. Find the actual amount of the discount.

  7. Find the sale price.

  8. Until next time…Find the Percent of Change.

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