Basic Mathematics for College Students

95. TELEPHONE AREA CODES The state of
    Florida has 9 less area codes than California. If
    California has 26 area codes, how many does
    Florida have?


96. READING BLUEPRINTS Find the length of the
    motor on the machine shown in the blueprint.


97. BANKING A savings account contained $1,370.
    After a withdrawal of $197 and a deposit of $340, how
    much was left in the account?


98. PHYSICAL EXAMS A blood test found a man’s
    “bad” cholesterol level to be 205. With a change of
    eating habits, he lowered it by 27 points in 6 months.
    One year later, however, the level had risen by
    9 points. What was his cholesterol level then?

Refer to the teachers’ salary schedule shown below. To use this
table, note that a fourth-year teacher (Step 4) in Column 2 makes
$42,209 per year.

99. a. What is the salary of a teacher on
    Step 2/Column 2?
    b. How much more will that teacher make next year
    when she gains 1 year of teaching experience and
    moves down to Step 3 in that column?


100. a. What is the salary of a teacher on
     Step 4/Column 1?
     b. How much more will that teacher make next
     year when he gains 1 year of teaching experience
     and takes enough coursework to move over to
     Column 2?

67 centimeters (cm)

33 cm

Motor

WRITING

101. Explain why the operation of subtraction is not
     commutative.


102. List five words or phrases that indicate subtraction.


103. Explain how addition can be used to check
     subtraction.


104. The borrowing process is more difficult when the
     minuend contains one or more zeros. Give an
     example and explain why.

REVIEW

105. Round 5,370,645 to the indicated place value.
     a. Nearest ten
     b. Nearest ten thousand
     c. Nearest hundred thousand


106. Write 72,001,015
     a. in words
     b. in expanded notation

Find the perimeter of the square and the rectangle.

107.

108.

Add.

109. 
     
     
     
     110. 813
          7,487
           654
     
     
     
     

345

4,672

 513

12 cm 12 cm

8 cm

8 cm

13 in. 13 in.

13 in.

13 in.

1.3 Subtracting Whole Numbers 39

Years

teaching Column 1 Column 2 Column 3

Step 1 $36,785 $38,243 $39,701

Step 2 $38,107 $39,565 $41,023

Step 3 $39,429 $40,887 $42,345

Step 4 $40,751 $42,209 $43,667

Step 5 $42,073 $43,531 $44,989

Teachers’ Salary Schedule
ABC Unified School District