6 ×1071002001 2002 2003 2004 2005MONEY SPENT ON NEW ROADWORK IN MILL...

4.6 ×10

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10

0

2001

2002

2003

2004

2005

Money Spent on New Roa

d

work

in Million

s

of Dollar

s

Year

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D ATA A N A LY S I S , S TAT I S T I C S , A N D P R O B A B I L I T Y

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later. Do the easy problems first. The GED is notExampleAn amoeba is .000056 inch long. What is itsarranged with increasingly difficult questions.The difficult questions appear alongside the length in scientific notation?easier questions. Therefore, it is important to skipStep 1: Move the decimal point to the right untildifficult problems and come back to them.there is one digit other than zero to the left of

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Plugging in.There will be times when you should use thethe decimal..000056 becomes 5.6answer choices to find the correct answer. Thiscan be done when you have a problem that givesStep 2: Count the number of places moved toyou a formula or equation. Plug in answers whenthe right—5. However, because the value of thenumber is being increased as it is expressed inyou feel it will be quicker than solving the prob-lem another way, and when you have enoughscientific notation, it is written as a negativeexponent.information to do so.10

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Eliminating.Eliminate choices you know are wrong so thatStep 3: Express the full answer in scientific notation:you can spend more time considering choices.0000056 becomes 5.6 ×10

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that might be right. It may sound like a simplestrategy, but it can make a big difference.

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Making educated guesses.

G e n e r a l S t r a t e g i e s f o r M a t h

It’s important to remember you are not penal-

Q u e s t i o n s

ized for a wrong answer. If you don’t know theanswer to a question and you are approaching thetime limit, simply use the last few minutes to

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Skipping and returning.If you are unsure of what you are being askedmake an educated guess to the remaining ques-to find, if you don’t know how to solve a problem,tions. If you can eliminate some of the answeror if you will take a long time to find the correctchoices, you will improve your odds of getting it right.answer, skip the question and come back to it

GED

C H A P T E R

45

Mathematics

Practice

Questions

NOW IT’S time to put all that you have learned about mathematicsand problem solving into practice. In the following section, you will find100 multiple-choice questions like those you will find on the GED Mathematics Test.

D i r e c t i o n s

Read the following questions carefully and choose the best answer for each question. Some questions may referto a figure, table, or graph. Be sure to answer every question; you will not be penalized for incorrect answers. Donot spend too much time on any one question so you can be sure to complete the questions in the allotted time.Record your answers on the answer sheet provided on the following page. Make sure you mark the answer inthe circle that corresponds to the question.Note:On the GED, you are not permitted to write in the test booklet. Make any notes or calculations on a sep-arate piece of paper.

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L E A R N I N G E X P R E S S A N S W E R S H E E T

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A n s w e r S h e e t