Unit 4

Rates and Ratios

100

What is the ratio of $ to #

$  #  $  #  $  $  

4:2 or 4 to 2 

200

What is a unit rate?

A rate where the the denominator is set to 1

300

60 miles per hour

Is this a rate or a ratio?

Rate

400

Convert this into a Unit Rate:

60 dollars per 3 hours

(Hint: How many dollars per 1 hour is this?)

$20 per hour

500

Convert this into a Unit Rate:

240 miles per 5 hour

(Hint: how many miles per 1 hour?)

48

% of a Quantity

100

4 Apples in an apple tree

Are the apples a PART or a WHOLE?

Part

200

Half a bag of rice.

Is the bag of rice a PART or a WHOLE?

Whole

300

There were 50 total t-shirts sold today.  20 of them were white.  What percentage of the t-shirts were white?

40%

400

400 students voted on a lunch time special.  60% of the students voted for Pizza.  How many students voted for Pizza?

240

500

10 apples fell out of a tree when the man shook it.  This was 20% of the apples in the tree.  How many apples were in the tree before the man shook it?

50

% of Change

100

Is a positive % change mean the number is increasing or decreasing?

Increasing

200

Is a negative % change mean the number is increasing or decreasing?

Decreasing

300

What is the percent change from 40 to 50?

25%

400

A soccer player weighed 180 pounds before season.  They weighed 155 pounds after season.  What was the % change in the player's weight?  (Round to the nearest tenth...ie first number after the decimal)

13.9% or -13.9%

500

A collector had 10 items last year.  She has 40 items now.  What was the % change in items?

300%

Mark Ups/Downs

100

Write down 3 types of Mark Ups

Possible Answers:

Tax, Tip, Mark Up, Gratuity, Increase

200

Write down three types of mark downs

Possible Answers:

Discount, Amount Off, Whole Sale, Decrease, Mark Down

300

There was an 8% sales tax added to the $60 shoes.  What is the total cost of the shoes after tax?

$64.80

400

The manager gave you a 15% discount on anything in the store.  You selected an $80 jacket.  How much will you have to pay for the jacket?

$68

500

Your bill is $27 at a restaurant.  There's a 5% sales tax, and you decide to leave a 20% tip.  How much is your total cost going to be?

(Hint: think about what the percentages are doing to the bill)

$33.75

Everything Else

100

Convert this decimal into a percentage

0.45

45%

200

Convert this % into a decimal

67%

0.67

300

Convert this % into a decimal

5%

0.05

400

You take out a loan for $1,000 with a 5% interest rate for 3 years.  How much interest will be added to this loan?

$150

500

The bank gives you a $30,000 start up loan to start a laundromat.  The loan is with an 8% interest rate over 5 years.  How much interest will you incur? 

$12,000