Basic Mathematics for College Students

97. WINDSURFING Estimate the area of the sail on
    the windsurfing board.


98. TILE DESIGN A design for bathroom tile is shown.
    Find the amount of area on a tile that is blue.


99. GEOGRAPHY Estimate the area of the state of New
    Hampshire, using the triangle in the illustration.


100. STAMPS The best designs in a contest to create a
     wildlife stamp are shown. To save on paper costs, the
     postal service has decided to choose the stamp that
     has the smaller area. Which one did the postal
     service choose? (Hint:use the formula for the area
     of a rectangle.)

(^7) –
8
in.
(^7) –
8
in.
(^3) –
4 in.
(^15) ––
16
in.

44

America's

Wildlife

Natural beauty

44

Concord

182 mi

106 mi

3 in.

3 in.

12 ft

7 ft

101. VISES Each complete turn of the handle of the
     bench vise shown below tightens its jaws exactly of
     an inch. How much tighter will the jaws of the vice
     get if the handle is turned 12 complete times?

102.WOODWORKING Each time a board is passed

through a power sander, the machine removes of

an inch of thickness. If a rough pine board is passed

through the sander 6 times, by how much will its

thickness change?

103. In a word problem, when a fraction is followed by
     the word of,multiplication is usually indicated. Give
     three real-life examples of this type of use of the
     word of.


104. Can you multiply the number 5 and another number
     and obtain an answer that is less than 5? Explain
     why or why not.


105. A MAJORITY The definition of the word majority
     is as follows: “a number greater than one-half ofthe
     total.” Explain what it means when a teacher says,
     “A majority of the class voted to postpone the test
     until Monday.” Give an example.


106. What does area measure? Give an example.


107. In the following solution, what step did the student
     forget to use that caused him to have to work with
     such large numbers?
     Multiply. Simplify the product, if possible.


108. Is the product of two proper fractions always
     smaller than either of those fractions? Explain why
     or why not.

Divide and check each result.

 400

 25

 736 (32 )

21 (3)

 8

4

REVIEW



1,188

3,465

44

63



27

55



44  27

63  55

WRITING

1

64

1

16

232 Chapter 3 Fractions and Mixed Numbers

New

Hampshire