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# Copy of Percent Word Problems

TCAP Math Prep
by

## Michael Showers

on 19 March 2013

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#### Transcript of Copy of Percent Word Problems

Percent
Word Problems Conclusion Thank you for your attention! A baseball player won 80% of the games he pitched. if he pitched 35 ballgames, how many games did he win? .80 X 35 = ? Examples: "Basic" Aids for solving
word problems: 1. What is the question?
2. Sort the information
3. Do you add or subtract?
4. The BASE will ALWAYS be the original number, price, or total! What is the question? 80% of 35 is what? BASIC
AND
EXPANDED Two forms of word problems A baseball player won 80% of the games he pitched. if he pitched 35 ballgames, how many games did he win? A baseball player won 80% of the games he pitched. if he pitched 35 ballgames, how many games did he win? Part
Base 80
100 X
35 80
100 SOLVE x
35 Cross-Multiply:
100x =(80)(35)
100x = 2800 2800 100=x x=28 games won Jerry, an electrician, worked 7 months out of the year. What percent of the year did he work? (round your answer to the nearest hundredth) example 2: Basic 12 months = 1 year Jerry, an electrician, worked 7 months out of the year. What percent of the year did he work? What is the question? What percent of 12 is 7? ? 7
100 12 ? x 12 = 7 1. 2. 3. Remember:
the base will always be the original number, price, or total 1. 2. 3. Expanded Sometimes the information needed to solve a percent word problem is not stated directly. You will need to sort out the numbers given in the problem. Organizing all the information into a box format will help you see what numbers you have and what you need. There are 28 students in a class. Sixteen of those students are men. what percent of the class are women? Examples: Expanded There are 28 students in a class. Sixteen of those students are men. what percent of the class are women? men % 16
women % 12
total 100% 28 P
P
B men % 16
women x % 12
total 100% 28 There are 28 students in a class. Sixteen of those students are men. what percent of the class are women? What is the question? 12 is what % of 28? There are 28 students in a class. Sixteen of those students are men. what percent of the class are women? 12 is what % of 28? 12 = % x 28 1. 2. x 12
100 28 3. p
b Solve: x= 42.9% There are 28 students in a class. Sixteen of those students are men. what percent of the class are women? men % 16
women x % 12
total 100% 28 12 is what % of 28? 12 = % x 28 x 12
100 28 28x = (12)(100)
28x = 1200 1200 : 28 = 42.85 42.9% 1. 2. 3. show work!!!! Donovan took a math test and got 35 correct and 10 incorrect answers.
What was the percentage of correct answers? (round to the nearest hundredth) SHOW YOUR WORK! Correct answers X % 35