Percent Proportion Lessons
Presentation
•
Mathematics
•
8th Grade
•
Hard
Joseph Anderson
FREE Resource
5 Slides • 5 Questions
1
Percent Proportions
Review of 7th grade proportion problems created by Mrs. Ratliff
2
Open Ended
Do you remember how to solve for x in the following proportion? Describe the steps to solve for x.
35x=208
3
Solving a Proportion
1. Cross multiply to create an equation.
2. Solve for "x"
4
Multiple Choice
Solve for x.
x48=3020
16
72
32
1440
5
Open Ended
What is a "percent" and how are they used in MONEY math?
6
Percents in "Real Life"
interest on a loan
Taxes
Tips
Sales
Grades!
Food Labels
Gasoline (percent grade)
and more...
7
Fill in the Blanks
Type answer...
8
Multiple Select
Select all the choices that are equivalent to 23%.
32
23.0
0.23
10023
230
9
Solving percent questions:
Since fractions can be written out of 100, we can use them in a proportion (two equivalent fractions) to find a missing value.
part
whole
percent
100
=
10
Solving percent questions:
Since fractions can be written out of 100, we can use them in a proportion (two equivalent fractions) to find a missing value.
1. What is 30% of 20?
2. What is 48% of 302?
part
whole
percent
100
=
Percent Proportions
Review of 7th grade proportion problems created by Mrs. Ratliff
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