Basic Mathematics for College Students

116 Chapter 1 Whole Numbers

The distance around a rectangle or a square is

called its perimeter.

sidesidesideside

Perimeter

of a

square

lengthlengthwidthwidth

Perimeter

of a

rectangle

Find the perimeter of the rectangle shown below.

15 ft

10 ft

Add the two lengths and

the two widths.

The perimeter of the rectangle is 50 feet.

 50

Perimeter 15  15  10  10

REVIEW EXERCISES

Add.

17. 
    
    
    
    18. 
        
    
    
    
    


18. 
    
    
    
    20. 
        
    
    
    
    


19. 
    
    
    
    22. 
        
    
    
    
    


20. 
    
    
    
    24. 
        
    
    
    
    


21. Add from bottom to top to check the sum. Is it
    correct?


22. What is the sum of three thousand seven hundred
    six and ten thousand nine hundred fifty-five?


23. Use front-end rounding to estimate the sum.


24. a. Use the commutative property of addition to
    complete the following:

b. Use the associative property of addition to

complete the following:

9 (9129)

24  61 

615  789 14,80239,9028,098

1,291

859

345

 226

1,821

32,812

65,034

54,323

4,4477,478 676

5,345 2  1  38  3  6

 655

236

 782

4 (3619)

27  436 (93) 6

29. AIRPORTS The nation’s three busiest airports in
    2007 are listed below. Find the total number of
    passengers passing through those airports.


30. What is 451,775 more than 327,891?


31. CAMPAIGN SPENDING In the 2004 U.S.
    presidential race, candidates spent $717,900,000. In
    the 2008 presidential race, spending increased by
    $606,800,000 over 2004. How much was spent by the
    candidates on the 2008 presidential race? (Source:
    Center for Responsive Politics)


32. Find the perimeter of the rectangle shown below.

731 ft

642 ft

Airport Total passengers

Hartsfield-Jackson Atlanta 89,379,287

Chicago O’Hare 76,177,855

Los Angeles International 61,896,075

Source: Airports Council International–North America