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Ratio, Rate, Unit Rate

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by

Allison Vasquez

on 17 March 2014

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Transcript of Ratio, Rate, Unit Rate

Ratio, Rate, Proportion
Ratios
The ratio of triangles to circles is 2 to 3.
Ratios
You can write ratios
3
ways
Rate
A rate is a
ratio
comparing two numbers with different
units
.
Conclusion
Ratio
A
ratio
is a
comparison
of two or more numbers.
1. 2 to 3

2. 2:3

3. 2/3
Ratios
Write ratios in
simplest form
.
28/36 7/9
18/9 2/1
14/32 7/16
Rate, Unit Rate
Example
A car travels 100 miles in 2 hours.
100 miles
2 hours
You should know:
Example:
Definition:
You should know:
Definition:
Rates, Unit Rate
You should know:
A
unit rate
tells the rate in the lowest terms, or the amount for
1
.
Ex.
100 miles
2 hours
=
50 miles
1 hour
Ratios Warm-Up
2. There are 72 students and 3 teachers on Team 7-3.
3. There are 33 girls and 39 boys on Team 7-3.
4. A train car has 64 seats. There are 48 passengers on the train.


Write the ratios in simplest form in all three forms.
5. Last year Morgan's baseball team won 20
more games than they lost
. If they won 80 games, what was the ratio of wins and loses?
Proportions
A proportion is an
equation
showing two ratios are
equal
.

definition:
Proportions
Example:
10
25
=
40
100
Proportions
You Should Know:
In a proportion, if the ratios are equivalent then the
cross-products
are equal.
Think of equal fractions.
Full transcript