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PERCENT OF CHANGE LESSON 3-8. UNDERSTANDING… PERCENT OF CHANGE What is percent of change? Percent of Change is… The percent amount (of increase or decrease)

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Presentation on theme: "PERCENT OF CHANGE LESSON 3-8. UNDERSTANDING… PERCENT OF CHANGE What is percent of change? Percent of Change is… The percent amount (of increase or decrease)"— Presentation transcript:

1 PERCENT OF CHANGE LESSON 3-8

2 UNDERSTANDING… PERCENT OF CHANGE What is percent of change? Percent of Change is… The percent amount (of increase or decrease) an amount changes from its original amount

3 PERCENT OF CHANGE AS A FORMULA… Formula… amount of change original amount Also as… amt of change = high amt – low amt original amt original amt

4 EXAMPLES 1… $104 to $25 increase or decrease? 104 – 25 = 104 79 = 104 *Always round to nearest %

5 EXAMPLE 2… 1065 acres to 2140 acres increase or decrease? 2140 - 1065 = 1065 1075 = 1065 *Always round to nearest %

6 PRACTICE Find the percent of change… Tell if an increase or decrease a)132 lbs to 120 lbs b)5 in. to 25 in.

7 HOMEWORK p. 147-148 #1-8, 11-18 calculator okay – MUST show set-up and process

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