STEP
INTO THE GED
CAREER
MATH:
Occupational Interests

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All occupations require some math. Rodeo riders
need to keep score and understand time, and it doesn't hurt them
to keep track of money!

A carpenter uses a different type of math
than a rodeo rider or an accountant, but math is an essential
skill in any workplace.

Everyone must be able to add, subtract,
multiply, and divide. Accountants need to add, subtract, multiply,
and divide to keep track of money. Doctors and pharmacists need to
add, subtract, multiply, and divide to measure dosages. Engineers
may need to add, subtract, multiply, and divide to measure
volume, or torque, or electrical power. Cooks and chefs will need
to add, subtract, multiply, and divide to measure food and liquid
quantities. Carpenters and architects need to add, subtract,
multiply, and divide to measure distances and spaces.

In this unit, let's explore how builders measure distances and spaces.

How do we measure distances in the United States?
Click the math icon below. A new window will open. When you finish the
activities, just click back on this page and continue.

Click the
box to learn more about measuring distance from your Math Mentor.
(Please
be patient. Allow time for the page to load.)

You can build something useful without measuring, if
you are very talented or lucky. As a professional, you will need to
measure everything very carefully.

Most
builders use lumber. Most lumber is sold by the board foot. A board foot
is one foot long, one foot wide, and one inch thick.

If you would like to know how many board feet are in
a given piece of lumber, use the following formula:

T x W x L / 12

T = the thickness of the board in inches (in)
W = the width of the board in inches
L = the length of the board in feet (ft)

Challenge and practice A:
Provide the information requested. Check the answer only after you enter
your own answer.

Problem Example:
You want to know how many board feet are in an 14 foot-long piece of 2 x
10 lumber.

Apply the formula
T x W x L / 12

2 x 10 x 14 / 12 = 21.33, so there are
23.33 board feet in that particular piece of lumber.

1. You want to know how many board feet are in an 18
foot-long piece of 2.5 x 8 lumber.

2.You want to know how many board feet are in an 15
foot-long piece of 2 x 10 lumber.

3. You want to know how many board feet are in an 17
foot-long piece of 1x 12 lumber. When you find the answer, calculate the
amount in centimeters.