7th Grade Math

Extra Practice begins on page EP2.

Lesson 3A Composite Figures 603

= Step-by-Step Solutions begin on page R1.

Extra Practice begins on page EP2.

• Solve a simpler problem.


• Eliminate possibilities.


• Draw a diagram.


• Choose an operation.

Use the solve a simpler problem strategy for

Exercises 3 and 4.

3. WALLPAPER Dora is wallpapering a wall
   in her house. What is the area that will be
   wallpapered?

2 ft

3 ft 10 ft

12 ft

4. CONTINENTS The table lists each continent
   and its percent of the world’s land area.
   The land area of Earth is 57,505,708 square
   miles. Find the approximate land area of
   each continent.

Continent Earth’s LandPercent of

Asia 30

Africa 20.2

North America 16.5

South America 12

Antarctica 8.9

Europe 6.7

Australia/Oceana 5.3

Use any strategy to solve Exercises 5–9.

5. DRIVING Don is driving from New Orleans
   to Atlanta at a constant speed. The distance
   is 480 miles. After driving for 6 hours, he
   is _^34 of the way there. How much longer
   does he have to drive to reach Atlanta?
   6. ZOO The table shows the Ticket Cost
   Adult $10.50
   Child $7.00
   Senior $8.50

cost of admission.

A family spent $33.00

on admission. What

combination is possible

for the number of tickets

that they purchased?

A. 2 adult, 1 child, 1 senior

B. 1 adult, 2 child, 1 senior

C. 1 adult, 1 child, 2 senior

D. 2 adult, 2 child

77 MUSIC On Mondays, you practice piano for

45 minutes. For each successive day of the

week, you practice _^1

3

hour more than the

day before. How many hours and minutes

do you practice the piano on Saturdays?

8. FOUNTAINS Mr. Flores has a circular
   fountain with a radius of 5 feet. He plans
   on installing a brick path around the
   fountain. What will be the area of the path?
   Round to the nearest tenth.

9 ft

5 ft

9. VIDEO GAMES The graph shows the results
   of a survey in which 347 students were
   asked to name their favorite type of video
   game. About how many students chose
   adventure as their favorite type of game?

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Favorite Types of Video Games

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