

Percent proportions
Presentation
•
Mathematics
•
6th - 8th Grade
•
Hard
Brianne Daye
FREE Resource
8 Slides • 17 Questions
1
I can solve problems involving percentages.
Percent Proportions
2
You can use a proportion to solve problems involving percents.
One ratio is the percent. Remember that the percent is always out of 100.
The other ratio is the part-to-whole comparison.
Percent Proportion
3
is = part
of = whole
If you don't see these words, it's okay. Think about a real life situation... what is the PART and what is the WHOLE?
4
Multiple Choice
Which word helps you identify your WHOLE?
is
of
5
Multiple Choice
Which word helps you identify your PART?
is
of
6
Multiple Choice
In a neighborhood, there are 9 families that own a poodle. If these owners make up 50% of all dog owners in the neighborhood, how many dog owners are there?
What part of the percent proportion are you missing? (What is this question asking you to find?)
Part
Whole
Percent
7
Multiple Choice
At a construction job, there are 15 painters. Of the painters, 40% of them are working on the inside. How many painters are working inside of the building?
What part of the percent proportion are you missing? (What is this question asking you to find?)
Part
Whole
Percent
8
Multiple Choice
At a construction job, there are 15 painters. Of the painters, 40% of them are working on the inside. How many painters are working inside of the building?
What part of the percent proportion are you missing? (What is this question asking you to find?)
Part
Whole
Percent
9
10
Multiple Choice
A campus survey states that 40% of students ride the bus. If there are 300 students, how many ride the bus?
Which proportion could be used to solve this problem?
100x=30040
10040=x300
300100=40x
10040=300x
11
Multiple Choice
A campus survey states that 40% of students ride the bus. If there are 300 students, how many ride the bus?
Which proportion could be used to solve this problem?
100x=30040
10040=x300
300100=40x
10040=300x
12
13
14
Multiple Choice
A local zoo had 750 visitors on Saturday. If 80% of the guests lived in the same town as the zoo, how many local guests visited the zoo on Saturday?
Choose the correct proportion to solve this problem.
10080=750x
75080=100x
15
...one step at a time!
16
Multiple Choice
Ms. Smith bought a box of 10 cupcakes. She ate 30% of the cupcakes. How many did she eat?
**What is this question asking you to find?**
part
whole
percent
17
Multiple Choice
Ms. Smith bought a box of 10 cupcakes. She ate 30% of the cupcakes. How many did she eat?
**What is your WHOLE? (total number of cupcakes)**
10
30
18
Multiple Choice
Ms. Smith bought a box of 10 cupcakes. She ate 30% of the cupcakes. How many did she eat?
**What is your PERCENT? (percent of cupcakes eaten)**
10
30
19
Multiple Choice
Ms. Smith bought a box of 10 cupcakes. She ate 30% of the cupcakes. How many did she eat?
**What is your PERCENT? (percent of cupcakes eaten)**
10030=?10
10030=10?
10010=?30
10010=30?
20
Fill in the Blanks
Ms. Smith bought a box of 10 cupcakes. She ate 30% of the cupcakes. How many did she eat?
**SOLVE!**
Type answer...
21
Work out each problem on paper.
Remember:
22
Fill in the Blanks
70% of the students at a school went on a field trip to an Aquarium. If there were 350 students on the trip, how many students attend that school?
Type answer...
23
Fill in the Blanks
A painter has finished painting 45% of a really long fence. If she has painted 90 feet so far, how long is the entire fence?
Type answer...
24
Fill in the Blanks
If a car’s gas tank has 15 gallons of gas in it, and the gauge says the tank is 75% full, then how many gallons can the entire tank hold?
Type answer...
25
Fill in the Blanks
A fruit stand’s most popular fruit is strawberries, which account for 35% of their total sales. If they usually sell $70 worth of strawberries each day, what would their usual daily income be?
Type answer...
I can solve problems involving percentages.
Percent Proportions
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