Ratios
There are 14 boys and 16 girls in Ms. Marquez's class. What is the ratio of boys to girls?
14 : 16
What is a proportion?
Two equal ratios
What is a unit rate?
A unit rate is a rate with a denominator of 1.
How many ways can you write a ratio?
3 ways
What is a ratio?
A comparison of two or more numbers by division.
Does 5/6 and 10/12 form a proportion?
Yes
What is the rate of 34 minutes for 8 pages?
34 minutes / 8 pages
Does 3/12 and 6/24 form a proportion?
Yes!
Sonya has 4 square cookies and 3 circle cookies. What is the ratio of circles to squares?
3 : 4
3 / 4
3 to 4
Does 36/4 and 3/1 form a proportion?
No
Is this example a rate or unit rate? Jeffrey ran 1 mile in 9 minutes
Rate
What is the unit rate for 144 pencils in 12 packages?
12 pencils per 1 package.
Daryl walked 150 steps in 6 minutes. What was his unit rate?
25 steps per 1 minute
There are 6 boys and 4 girls in Ms. Joseph's class. What is the ratio of girls to the total number of students in the class?
4 : 10
4 / 10
4 to 10
Give me an example of a rate.
Ms. Cruz will check your answer!
If Jasper's motorcycle travels 350 miles in 7 hours, what is its rate per hour?
50 miles per 1 hour
What is the difference between rate and unit rate?
The denominator of a unit rate is 1.
At a cat and dog hospital, 9 of the patients were cats, 17 were dogs. Use this fact to describe a ratio. Explain what the ratio means.
9 : 17 9 to 17 9/17
The ratio of cats to dogs.
Jaedin says that the ratios 3:5 and 2:10 are equal. Is she correct?
No
If Aleah's car travels 350 miles in 7 hours, what is its rate?
350 miles / 7 hours
Give me an example of a unit rate.
1) Simplifying Method
2) Cross Product