Download presentation
Presentation is loading. Please wait.
1
Section 6.6 Percents and Equations
Algebra Concepts Section 6.6 Percents and Equations
2
Warm-up Change the following to decimals. #1 36% #2 4% #3 240% #4 6.2%
#1 36% #2 4% #3 240% #4 6.2% #5 88%
3
Write an equation Let x = the unknown Of means multiply Is means =
Find means π= In an equation, percents are always written in decimal form
4
Find 30% of 200. Write this as a math equation! π₯= π₯=60
5
Types of equation Find the percent Find the part Find the whole
6
Finding percent What percent of 50 is 20? π₯ 50 =20
Divide both sides by 50 π₯=.40 Write answer as a percent 40%
7
Finding the part What is 25% of 80? π₯=.25Γ80 π₯=20
8
Finding the whole 7 is 40% of what number? 7=.40(π₯)
Divide both sides by .40 π₯=17.5
9
Mix it up! #1 35 is what percent of 50? #2 What number is 20% of 75? #3 22 is 40% of what number?
10
Watch out for tricky problems
12 is 150% of what number? 12=1.50(x) 8=x
11
Watch out for tricky problems
45 is what percent of 15? 45=π₯ 15 3=π₯ Remember percents are in decimal form! Answer 300%
12
Commission- amount of pay based on the amount a person sells
πΆπππππ π πππ=%(ππππ’ππ‘ ππ π ππππ )
13
Meaghan is a realtor and she makes 3% of houses she sells
Meaghan is a realtor and she makes 3% of houses she sells. Last week, she sold a house for $267,000. How much commission did she make?
14
How many minutes a day do you watch TV? a) none b) between 0 and 60 minutes c) between 1 and 2 hours d) more than 2 hours
15
How can we set up an equation to find the percent of students in this class that watch more than three hours of TV a day?
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.