Chapter 6 Pre-Algebra

6.1: Ratios/Unit Rates

100

Find the Unit Rate:

48 miles on 3 gallons of gas.

16 Miles per Gallon 

200

Write the ratio as a fraction in simplest form:

21:51

7/17

300

Write the ratio as a fraction in simplest form:

36 to 8

9/2 (keep improper!)

400

Find the Unit Rate:

12 donuts for $9.

$0.75 per Donut

500

Find the Unit Rate: 

70 copies made in 7 minutes.

10 Copies per Minute

6.2 & 6.3: Solving Proportions

100

Write a proportion and then solve.

You drive approximately 900 miles from Atlanta to New York City. If you travel at a speed of 72 miles per hour, how long were you driving?

12.5 hours

200

Write a proportion and then solve.

A five pound bag of gala apples costs $7.95. What is the price per pound?

$1.59 per pound of apples

300

Write a proportion and then solve.

It takes 2 sticks of butter to make enough frosting for 12 cupcakes. How many sticks of butter would you need to make enough frosting for 66 cupcakes?

11 sticks of butter

400

Write a proportion and then solve. Round to the nearest tenth. 

The scale of a map is 4 in: 25 mi. If two towns are actually 17 miles apart, how far are they on the map?

2.7 inches

500

Which is the better buy?

1. a dozen starbursts for 50 cents

2. 20 mints for $1.37

a dozen starbursts for 50 cents is the better buy

6.5: %'s, Fractions, and Decimals

100

Express the value as a percent. 

2/3

66.6 (repeating-need hat!) %

200

Express the values as a percent.

1. 3

2. 0.7

1. 300%

2. 70%

300

Express each percent as a decimal number or whole number.

1. 2.25%

2. 4%

3. 100%

1. 0.0225

2. 0.04

3. 1.00

400

Express the percent's as a fraction in simplest form

1. 95%

2. 0.3%

1. 19/20

2. 3/1000

500

Order the following sets of numbers from least to greatest. 

1. 1.34, 129%, 4/5, 1.41

2. 0.09, 1%, 11%, 1/8

1. 4/5, 129%, 1.34, 1.41

2. 1%, 0.09, 11%, 1/8

6.6 & 6.7: Proportions (is/of=%/100 & part/whole=%/100)/Percent's & Equations

100

Solve each percent problem by using a proportion or equation. 

Find 12% of 80.

9.6

200

Solve each percent problem by using a proportion or equation. 

What percent of 50 is 2.5?

5%

300

Solve each percent problem by using a proportion or equation. 

30% of x is 12. What is x?

x=40

400

Solve each percent problem by using a proportion or equation. 

Find 30% of 121

36.3

500

Solve each percent problem by using a proportion or equation. 

14 is 35% of what number?

40

6.9: Discount, Sales Tax, etc..

100

Find the Discount AND Sale Price.

Nike Shoes for $100 with a 20% discount. 

Discount= $20

Sale Price= $80

200

Find the Tip and Total Cost of the meal. 

Waffle House total $15.75 with a 25% tip.

Tip= $3.94

Total Cost= $19.69

300

Find the Sales Tax and Total Cost.

Xbox game for $36 with a 7% tax. 

Tax= $2.52

Total Cost= $38.52

400

Find the Discount AND Sale Price.

Expo Markers for $24.72 with a 12% discount. 

Discount =$2.97

Sale Price =$21.75

500

Find the Tip and Total Cost of the meal. 

Zaxby's total $8.88 with a 5% tip.

Tip= $0.44

Total Cost= $9.32