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Vocab
Ratio
Unit Rate
Word Problems
Unit Pricing & Proportions
100
What is a Ratio?
A comparison between two quantities. 
100
How do you simplify a ratio?
You find the GCF (figure out what number can be divide by the numerator and the denominator).
100
Solve the unit rate.

30 mins/ 4 miles

7.5 miles/mins
100
For every 5 boys on a softball team there is 1 girl. What is the ratio of boys to girls?
5 to 1
100
If you can buy one fruit basket for $30 then how many can you buy with $60.
2
200

What is an Equivalent ratio?

Two ratios that express the same relationship.

200

Write this ratio in simplest form. 4:6

2:3

200
Find the unit rate. 15 pages/ 12 mins
.25 pages/ mins
200
The ratio of male to female birds in a cage was 8:6.

For every ___ males there were ___ females.

_8_  and  _6_
200
How do you find proportions?

To find proportions, we can use cross products to test whether two ratios are equal and form a proportion. To find the cross products of a proportion, we multiply the outer terms.

300
What is a proportion? How does it relate to ratios?
A proportion says that two ratios are equal. It compares the two ratios to see if they are equal.
300
Write the ratio as a fraction in its simplest form.

77 to 84.

11/12
300

The store is selling apples 6 for $3. What is the cost if Sally only wants to buy one apple?

$.50

300
Miranda's Maid Service charges $280 to clean 8 offices. What is the company's price for cleaning a single office?


$35
300
How do you find unit price?

To find the unit price, divide the price by the number of units.

400

What's the difference between a fraction and a ratio? 

A fraction is a number that names part of a whole or part of a group. The denominator represents the total number of equal parts the whole is divided into. A ratio is a comparison of two quantities.

400

Write the ratio in 3 different ways.

14:21

14/21

14:21   and 14 to 21

400
If Nancy earns $180 in 20 hours, then the unit rate of her earning is...
$180/20 hours = $9/ 1 hour
400
Gabrielle bought three cantaloupes for $7. How many cantaloupes can Shayna buy if she has $21?
Shayna can buy 9 cantaloupes.
400
Which has the better unit price? What is the price?

2 hamburgers for $8 or 5 hamburgers for $24.

round to the nearest tenth.

2 hamburgers for $8 because the unit price is $4.
500
Compare and contrast a unit rate and a rate.
They are alike because they both compare rates. They are different because a unit rate is a rate for which one of the numbers are being compared and a rate is a ratio that compares different quantities measured in different units.
500

How do you solve an equivalent ratio?

You can solve equivalent ratios by multiplying or dividing both sides by the same number. This is similar to finding equivalent fractions.

500

DOUBLE JEOPARDY (double the points)

How do you find a unit rate?

1. write the ratio as a fraction.

2. Divide the numerator and denominator by the denominator.

3.label it

4.interpret what the ratio means.

500

DOUBLE JEOPARDY Round your answer to the nearest tenth. Round dollars amounts to the nearest cent.

Molly bought two heads of cabbage for $1.80.How many heads of cabbage can Will buy if he has $28.80? 

Will can buy 32 heads of cabbage.
500
What does the variable in a proportion mean?
The part of a proportion that is unknown and needs to be found.