Ratios
Write 6 to 8 in 2 other ways.
6/8, 6 to 8, 6:8
Is this a rate? 4 cookies per 1 student.
Yep
2:3 and 4:6
Yes, proportional.
x/6 = 6/9
x=4
Anna earns $30 in 3 hours. How much does she make in 9 hours?
What is $90
Write 10 : 6 as a ratio in 2 other ways.
10:6, 10/6, 10 to 6
Is this a rate? 10 miles per 2 hours.
Nope.
Are 1/6 and 2/7 proportional?
Not Proportional
x/2 = 9/6
x=3
Ramon gets 10 points in 4 games. How many does he get in 8 games?
What is 15 points
What are the 3 ways we write a ratio.
As a fraction, with a colon, and with the word "to"
If 3 cookies cost $6, how much does one cookie cost?
$2
Are 6:8 and 12:16 proportional?
Yes proportional
x/6 = 8/12
x=4
Henry reads 8 pages in 6 minutes, then he reads 4 pages in how many minutes?
3 minutes
A comparison between two numbers is called a______
ratio
What is the unit rate of 10 miles per 2 hours?
5 miles per hour
Are 5 to 10 and 10 to 20 proportional?
Yes proportional
6/10 = 18/x
x=30
Julia texts 60 words in 4 minutes, then she texts 120 words in how many minutes?
8 minutes
When is your Unit 3 Quiz?
Tomorrow!
What is a unit rate?
A special kind of ratio where one of the numbers is 1.
12 to 20 and 3 to 10
Not proportional
3 15
_ = _
8 x
x = 40.
RACS students study 25 hours for 2 tests. They study 100 hours for how many tests?
8 tests.