Comparing Unit Rates
Presentation
•
Mathematics
•
6th - 7th Grade
•
Hard
Joseph Anderson
FREE Resource
9 Slides • 10 Questions
1
Unit Rates
Lesson 1
2
Ratios
A ratio compares the relative sizes of two quantities.
3
What is the ratio of rolled oats to sesame seeds?
4
Multiple Select
What is the ratio of dried cranberries to mixed nuts?
1 to 2
2:1
1/2
2 to 1
5
A rate compares two quantities with DIFFERENT units.
Driving 120 miles in 2 hours
The units are miles & hours
6
Multiple Choice
Which is a rate?
6 feet2 feet "2 feet to 6 feet"
8 cups4 cups "4 cups to 8 cups"
30 seconds10 words "10 words in 30 seconds"
7
A unit rate is a rate that is simplified so that it has a denominator (2nd #) of 1 unit.
Driving 60 miles in 1 hour or 60 miles/1 hour
/ = "per"
8
Multiple Choice
Which is a UNIT rate?
100 miles / 3 hours
35 miles / 1 hour
70 miles / 2 hours
9
In order to simplify and find the unit rate: ALWAYS divide both numbers by the second number!
10
Multiple Choice
How do you simplify a unit rate?
Divide by the second number.
Multiply both numbers together.
Add the two numbers together.
Subtract the second number.
11
Multiple Choice
Find the unit rate (how many avocados per bag):
42 avocados in 7 bags
7 avocados/bag
6 avocados/bag
7 bags/avocado
14 avocados/bag
12
Multiple Choice
Find the unit rate (how many minutes per video):
24 minutes to watch 4 videos
4 minutes/video
4 videos/minute
6 minutes/video
8 minutes/video
13
Fill in the Blanks
Type answer...
14
Fill in the Blanks
Type answer...
15
Fill in the Blanks
Type answer...
16
A car travels 0.75 miles every minute. How can we use this information to find out how far the car travels in one hour?
17
The ratio of girls to boys in a classroom is 3:5. Kevin says there must be 8 students in the classroom. Which explains whether Kevin is correct?
A. Kevin is correct because 3 girls + 5 boys = 8 students.
B. Kevin is correct because 5 girls + 3 boys = 8 students.
C. Kevin is incorrect because 3:5 may be a simplified ratio.
D. Kevin is incorrect because the ratio 3:5 does not compare different units.
18
One pound of grapes costs $1.55. Which equation correctly shows a pair of equivalent ratios that can be used to find the cost of 3.5 pounds of grapes?
19
Multiple Choice
How would you rate yourself with this lesson?
I've GOT this and I could teach it someone else!
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Unit Rates
Lesson 1
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