Basic Mathematics for College Students

99. FLATSCREEN TELEVISIONS The picture screen
    on a television set is measured diagonally. What size
    screen is shown below?


100. LADDERS A painter’s ladder is shown below.
     How long are the legs of the ladder?

WRITING

101. When asked to find , a student answered 8.
     Explain his misunderstanding of the concept of
     square root.

116

√225 ft √169 ft

√1,764 in.

102. Explain the difference between the squareand the
     square rootof a number. Give an example.


103. What is a nonterminatingdecimal? Use an example
     in your explanation.


104. a. How would you check whether?
     b. How would you check whether?


105. Explain why does not represent a real number.


106. Is there a difference between and?
     Explain.
     107.. Explain why an symbol is used and
     not an symbol.


107. Without evaluating the following square roots,
     determine which is the largest and which is the
     smallest. Explain how you decided.
     ,,,,

REVIEW

109. Multiply:


110. Divide:


111. Evaluate:


112. Add:23.45 76 0.0093.8

(3.4)^3

5.718.525

6.7512.2

12312711116120



16 2.449 

 125 1  25

1  4

17 2.65

1389  17

394 Chapter 4 Decimals

STUDY SKILLS CHECKLIST

Do You Know the Basics?

The key to mastering the material in Chapter 4 is to know the basics. Put a checkmark in the box

if you can answer “yes” to the statement.

I have memorized theplace-value charton page

317.

I know the rules for rounding a decimal to a

certain decimal place value by identifying the

rounding digitand the test digit.

I know how to add decimals using carryingand

how to subtract decimals using borrowing.

I have memorized the list of perfect squareson

page 387 and can find their square roots.

216  4 2121  11

537

6

. 0

10

4

14

 2 3. 9 8

513. 0 6

1

7.1

1

8

154.2 0

 46.03

207.41

I know how to multiplyand divide decimals and

locate the decimal point in the answer.

I know how to use division to write a fraction as a

decimal.

0.6

5 3.0

 30

0

3

5

0.6

2.8

3.49.5 2

 68

272

 272

0

1.84

 7. 6

1104

12880

13.984

 

9