
Packet #3 Overview
Presentation
•
Mathematics
•
6th - 8th Grade
•
Easy
Katie Argall
Used 1+ times
FREE Resource
22 Slides • 21 Questions
1
Packet #3 Overview
All things Rates and Ratios
2
Topic Overview
Proportional Relationships
Scales Models/Drawings
Similar Figures
Percents
Simple Interest
Ratio and Rates
3
Ratio
comparison of two quantities
can be same or different units
written in 3 ways ~ 2 to 3, 2:3, 2/3
4
Ratios
The ratio of adults to children is 2 to 5. What does this mean?
5
For every 2 adults, there are 5 children.
6
Ratios
2 adults, 5 children
4 adults, ? children
? adults, 50 children
7
Rate
compares two quantities
measured in different units....mi/hr, price/pound
8
Unit Rate
a rate with a denominator of 1 (unit means 1)
Ex. Shelby drove 70 miles/1 hr or 70 mph
9
Multiple Choice
Nyoko is having a pizza party. If two large pizzas serve 9 people, how many pizzas should she order to serve 27 guests at the party?
6 pizzas
2 pizzas
10 pizzas
8 pizzas
10
Multiple Choice
A quarterback throws 222 yards in 6 games. How many yards does he throw in one game if he throws the same amount in each game?
22 yards
37 yards
52 yards
73 yards
11
Multiple Choice
A principal needs 2 chaperones for every 25 students at the school dance. How many chaperones does he need if 225 students are expected to be at the dance?
16 chaperones
8 chaperones
10 chaperones
18 chaperones
12
Multiple Choice
Lusita earned $85 for 8 hours of babysitting. Avery earned $125 for 11 hours of babysitting. Are the rates equivalent?
Yes, they are equivalent
No, they are not equivalent
13
Multiple Choice
A container has four different color balls. The ratio of blue balls to red balls is 3:7 and the ratio of green balls to yellow balls is 9:21. Are the ratios of blue balls to red balls and green balls to yellow balls equivalent?
Yes
No
14
Proportional Relationships

15
Characteristics of Proportional Graphs.
They are in the shape of a straight line.
They start or cross at the point of origin.
16
Multiple Choice
17
Multiple Choice
18
Multiple Choice
19
Constant of Proportionality
20
Multiple Choice
21
Multiple Choice
22
Multiple Choice
23
Multiple Choice
24
Multiple Choice
What does the scale on the map mean?
Every 1 in in the map equals 125 mi
Every 125 mi in the map equals 1 in
25
Multiple Choice
The scale on a highway construction drawing is 0.5 inches for every 45 miles. If the drawing shows the highway is 4 inches long, how long is the actual highway
360 mi
11.25 mi
180 mi
22.5 in
26
Similar Figures
​
27
What makes two figures SIMILAR?
same shape or figure
ratios of the lengths of their corresponding sides are equal
corresponding angles are congruent
28
Same Shape
The shapes must be the same, in any direction or rotation.
The size does not matter as long as we are able to identify the proportional relationship of their measurements.
29
30
31
32
33
Multiple Choice
What percent is shaded
38%
1.61%
6.2%
62%
34
Multiple Choice
Convert 46% into a decimal
4.6
0.46
0.046
0.0046
35
Let's try some problems..
Use your calculator to help you!
36
Multiple Choice
What is 40% of 80?
First, change the percent to a decimal. Next, multiply the number by the decimal.
32
.40
60
41.2
37
Multiple Choice
Now you try these...
What is 64% of 75?
117
48
85
56
38
39
40
41
Multiple Choice
Interest rate =5%
Time = 5 years
What is the interest earned?
42
Multiple Choice
43
Multiple Choice
You take out a car loan. How much will you pay in total for the car, if your loan is for $8000, at a rate of 5% interest, over 3 years?
$1,200
$120
$920
$9,200
Packet #3 Overview
All things Rates and Ratios
Show answer
Auto Play
Slide 1 / 43
SLIDE
Similar Resources on Wayground
35 questions
Solving Equations Introduction
Presentation
•
6th - 7th Grade
37 questions
Kitchen Equipment 1
Presentation
•
6th - 8th Grade
39 questions
Identifying Slope and Y-Intercept
Presentation
•
7th - 8th Grade
37 questions
Integer Operations
Presentation
•
6th - 9th Grade
39 questions
Scientific Notation and Standard Form
Presentation
•
6th - 8th Grade
36 questions
Surface Area and Volume Study Guide
Presentation
•
7th Grade
40 questions
Transformations, Congruence, and Similarity
Presentation
•
6th - 8th Grade
Popular Resources on Wayground
24 questions
PBIS-HGMS Day 10
Quiz
•
6th - 8th Grade
10 questions
HCS SCI 03 Summer School Review 3
Quiz
•
3rd Grade
11 questions
Home Scope
Quiz
•
7th - 8th Grade
15 questions
HCS SCI 05 Summer School Assessment 3 Review
Quiz
•
5th Grade
35 questions
Lufkin Road Middle School Student Handbook & Policies Assessment
Quiz
•
7th Grade
18 questions
Geo 11.3 Area of Circles and Sectors
Quiz
•
9th - 11th Grade