Title 6 5 Percent Increase and Decrease Tool

Title: 6 -5: Percent Increase and Decrease Tool Bag Formulas, equations, Vocabulary, etc. Objective Percent Change Example #1 Name Date Period Here’s How…Notes & Examples To find the percent increase and decrease. Percent change = amount of change original amount There are 36 kids on the first day of basketball tryouts. The next day, there are 45 kids. What is the percent change? Percent change = amount of change original amount = 45 -36 36 9 = 36 = 0. 25 = 25% From 36 kids to 45 kids is a 25% increase.

Title: 6 -5: Percent Increase and Decrease Tool Bag Formulas, equations, Vocabulary, etc. Example #2 Name Date Period Here’s How…Notes & Examples You have 55 Skittles and you eat some so you have 44 left. What is the percent change? amount of change Percent change = original amount = 55 -44 55 11 = 55 = 0. 2 = 20% From 55 Skittles to 44 Skittles is a 20% decrease. You Try 1) You have 16 pennies and drop some. You notice you only have 12 pennies left. What is the percent change? 2) You are collecting aluminum cans. You start with 45 and end up with 54. What is the percent change?

Title: 6 -5: Percent Increase and Decrease Tool Bag Formulas, equations, Vocabulary, etc. Discount Mark-Up Example #3 Name Date Period Here’s How…Notes & Examples the difference between the regular price and sale price. the difference between the whole sale price and the retail price. Movie tickets cost $12. Children 12 and under get a 15% discount. How much is a child ticket? Method 1 – (12) (0. 15) = 1. 80 12 - 1. 80 = 10. 20 Find 15% of $12. Subtract $1. 80 from $12 Method 2 – 100% - 15% = 85% 12 (0. 85) = 10. 20 Find the percent students pay Find 85% of $12 Multiply & Subtract & Multiply You Try You go to the Apple store to buy a new i. Phone that costs $450. You have a special offer coupon that gives you 20% off. How much do you pay?

Title: 6 -5: Percent Increase and Decrease Tool Bag Formulas, equations, Vocabulary, etc. Example #4 Name Date Period Here’s How…Notes & Examples A street vendor buys 49 er jerseys at a wholesale price of $96. The retail price is marked up by 75%. What is the selling price? Method 1 – (96) (0. 75) = 72 96 + 72 = 168 Find 75% of $96. Add $72 to $96 Method 2 – 100% + 75% = 175% 96 (1. 75) = 168 Find the total percent of the price Find 175% of $96 Multiply & Add & Multiply You Try What is the retail price on computer whose wholesale price is $650 and is marked up 30%?