Do Now Write each proportion and answer 1

Do Now Write each proportion and answer. 1. 54% of the 1, 250 kids at Park Ave. have some computer restrictions at home. Determine what part of the population that is. 2. 74% of 12 year olds use IM. Predict how many of the 2, 480 middle school kids that is.

Chapter 8 Lesson 4 Percent of Change Objective: Find the percent of increase or decrease

Percent Change Is a ratio that compares the change in quantity to the original amount of change Percent of change = original amount

Percent Increase The original quantity is increased (New amount – original amount) amount of change Percent of change = original amount

Percent Decreased The original quantity is decreased. (Original amount – new amount) amount of decrease Percent of change = original amount

Find the percent of change in tree height from one year to year 10. Round to the nearest whole percent if necessary. Percent of increase Percent of change = amount of change original amount 9. 6 - 4 = 5. 6 9. 6 ft 4 ft 5. 6 4 140% The percent of increase in the tree height is 140%

Find the percent of change if the original price of a stock was $75 and the new price is $60. Round to the nearest whole percent if necessary. Percent of Decrease Percent of change = amount of decrease original amount 75 – 60 = $15 15 75 0. 2 20% Stock Original New Price $75 $60

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: 10 New: 13 Increase 13 -10 = 3 3 10 30%

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: 20 New: 15 decrease 20 - 15 5 20 25%

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: 30 New: 24 decrease 30 – 24 = 6 6 30 20%

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: $75. 80 New: $94. 70 Increase $94. 70 – 75. 80 = $18. 90 75. 80. 249340 = 25%

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: $126 New: $150 Increase 150 – 126 = 24 24 126. 1904 = 19%

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: 1. 6 New: 0. 95 decrease 1. 6 – 9. 95 =. 65 1. 6 0. 40625 = 41%

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or decrease. Original: 624 New: 702 Increase 702 – 624 = 78 78 624 0. 125 = 13%

Do numbers 11 -21 odd on page 352 in your textbook

Homework Page 352 numbers 12 – 22 even.