Transcript Easter Eggs - St. Landry Parish School Board

Percents with Equations
•
Remember that “of” means multiply in
mathematics.
of = x
Percents and Equations
Key Concepts:
One Equation can help you solve each type of problem
part = Percent
•
Whole
Plug in the “pieces of data” the problem gives you
Your unknown becomes your variable
Percents and Equations
Key Concepts:
What percent of 80 is 25?
part = Percent
25
=
25
80p
=
80
80
p
25 = 80p
• Whole
•
80
31.25% = p
Percents and Equations
Key Concepts:
30% of what number is 120?
part = Percent
120
=
120
.30w
=
.30
.30
• Whole
.30
•
120 = .30w
w
400 = w
Percents and Equations
Key Concepts:
What is 85% of 150?
part = Percent
p
=
.85
p = 127.5
• Whole
•
150
Percents and Equations
Practice:
The length of the Appalachian Trail is 2174 miles. 25% of the length is in the state of
Virginia. How many miles are in Virginia?
part = Percent
• Whole
p = .25
• 2174
p = 543.5 miles are in Virginia
Percents and Equations
Practice:
There are currently 130,000 nurses in the state of Florida. Of those nurses, 34,000 are new.
What is the percentage of new nurses?
part = Percent
• Whole
p
34,000 =
• 130,000
34,000 = 130,000p
34000
130000
130000p
=
130000
26.15% = p
Percents and Equations
Practice:
15 is 2.5% of what number?
part = Percent
15
• Whole
•
= .025
15 = .025w
15
.025w
=
.025
.025
w
600 = w
Percents and Equations
Practice:
What is 52% of 260?
part = Percent
p
=
.52
p = 135.2
• Whole
•
260
Percents and Equations
Practice:
What percent of 280 is 157?
part = Percent
157
=
p
• Whole
•
280
157 = 280p
157
280p
=
56.07%
=
p
280
280
Percents and Equations
Finding Percent (Part) of a Whole:
Method Two: Write an Equation
.15
.15 x 56
x
Change percent to decimal
and
“of” to multiplication
56
=
Find 15% of 56
8.4
Multiply
Percents and Equations
Finding Percent (Part) of a Whole:
Method Two: Write an Equation
.32
.32 x 75
x
Change percent to decimal
and
“of” to multiplication
75
=
Find 32% of 75
24
Multiply
Percents and Equations
Practice:
60 is 48% of what number?
part = Percent
60
=
60 .48w
=
.48
.48
.48
60 = .48w
• Whole
•
w
125 = w
Percents and Equations
Practice:
24 is 65% of what number?
part = Percent
24
=
24 .65w
=
.65
.65
.65
24 = .65w
• Whole
•
w
36.92 = w
Percents and Equations
Practice:
42 is what percent of 60?
part = Percent
42
=
42 60p
=
60
60
p
42 = 60p
• Whole
•
60
70% = p
Percents and Equations
Practice:
110 is what percent of 200?
part = Percent
• Whole
p
• 200
110 = 200p
110
200p
=
55%
=
p
200
200
110
=
Percents and Equations
I know this is a lot of information
but I have faith in each and every
one of you that with practice
you will have this mastered
in no time!