
Percent Equations
Presentation
•
Mathematics
•
7th Grade
•
Hard
James Gonzalez
FREE Resource
5 Slides • 8 Questions
1
Understand, Write & Solve Percent Equations
2
3
Multiple Choice
When plugging in a value for p (the percentage) in the percent equation, you need to write the percent in what form?
word
fraction or decimal
algebraic
Pig Latin
4
Example 1: Finding a part of a number
5
Multiple Choice
Use Example 1 to help you.
Write and Solve an equation for the following:
32% of 25 is what number?
32 = 25w
1.28 = w
32 x 25 = w
800 = w
0.32 x 25 = w
8 = w
25w = .32
w = 128
6
Multiple Choice
Use Example 1 to help you.
Write and SOLVE and equation for the following:
20% of 150 is what number?
0.20 x 150 = a
30 = a
20 x 150 = a
300 = a
20 = 150a
2/15 = a
20a = 150
a = 7.5
7
Example 2: Find a Percent, given a part and a whole
8
Fill in the Blanks
9
Fill in the Blanks
10
Multiple Choice
Use Example 2 to help you.
Write and solve an equation for the following:
29 is what percent of 20?
29 x 20 = p
580% = p
29 = 20p
145% = p
29 = 20p
1.45 = p
p + 20 = 29
p = 9%
11
12
Fill in the Blanks
Type answer...
13
Multiple Choice
Use Example 3 to help you.
Write and solve an equation for the following:
0.5% of what number is 12?
.50 + w = 12
w = 11.5
50w = 12
w = .24
5w = 12
w = 2.4
0.005w = 12
w = 2400
Understand, Write & Solve Percent Equations
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