GRE Math : Decimal Operations

Study concepts, example questions & explanations for GRE Math

Create An Account

All GRE Math Resources

13 Diagnostic Tests 452 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : How To Add Decimals

Solve for :

n = 0.867 + 3.244

Possible Answers:

n = 4.123

n = 4.111

n = 4.121

n = 4.222

n = 4.321

Correct answer:

n = 4.111

Explanation:

To add decimals, simply treat them like you would any other number. Any time two of the digits in a particular place (i.e. tenths, hundredths, thousandths) add up to more than ten, you have to carry the one to the next greatest column. Therefore:

.867 +3.244 = 4.111

So n = 4.111 .

Report an Error

Example Question #1 : Decimals

Solve for :

y + 0.459 = 1.234

Possible Answers:

y = 0.875

y = 0.775

y = 0.765

y = 0.777

y = 0.785

Correct answer:

y = 0.775

Explanation:

To solve this problem, subtract 0.459 from both sides of the eqution, 1.234 - 0.459 = 0.775

Therefore, y = 0.775 .

If you're having trouble subtracting the decimal, mutliply both numbers by followed by a number of zeroes equal to the number of decimal places. Then subtract, then divide both numbers by the number you multiplied them by.

Report an Error

Example Question #1 : Decimals

Solve for :

n - 9.85 = 10.75

Possible Answers:

n = 21

n = 21.6

n = 20.620

n = 20.6

n = 20

Correct answer:

n = 20.6

Explanation:

To solve, first add 9.85 to both sides of the equation:

n - 9.85 + 9.85 = 10.75 + 9.85

n = 10.75 + 9.85

Then add the decimals together:

n = 20.6

Report an Error

Example Question #361 : Arithmetic

Solve for :

x - 4.150 = 2.818

Possible Answers:

x = 7.968

x = 6.888

x = 5.968

x = 7

x = 6.968

Correct answer:

x = 6.968

Explanation:

To solve, you need to do some algebra:

x - 4.150 = 2.818

Isolate x by adding the 4.150 to both sides of the equation.

x - 4.150 +4.150 = 2.818 + 4.150

x = 2.818 + 4.150

Then add the decimals. If you have trouble adding decimals, an effective method is to place one decimal over the other, and add the digits one at a time. Remember to carry every time the digits in a given place add up to more than .

x = 6.968

Report an Error

Example Question #5 : Decimals

Solve for :

y - 1.2 = 3.865

Possible Answers:

y = 6

y = 5.865

y = 5

y = 5.065

y = 6.065

Correct answer:

y = 5.065

Explanation:

To solve for , first add 1.2 to both sides of the equation, so that you isolate the variable:

y - 1.2 + 1.2 = 3.865 + 1.2

y = 3.865 + 1.2

Then, add your decimals, and remember that 1.2 = 1.200 .

y = 5.065

Report an Error

Example Question #1 : Decimals

Solve for :

p - 3.222 = 4.008

Possible Answers:

p = 7.232

p=7.323

p = 7.222

p = 7.23

p = 7.32

Correct answer:

p = 7.23

Explanation:

To solve, first add 3.222 to both sides of your equation, so you isolate the variable:

p - 3.222 + 3.222 = 4.008 + 3.222

p = 4.008 + 3.222

Then add the decimals together:

p = 7.23

Report an Error

Example Question #1 : How To Subtract Decimals

x > 0

Quantity A: x-1

Quantity B: 1-x

Possible Answers:

The relationship cannot be determined.

Quantity B is greater.

Quantity A is greater.

The two quantities are equal.

Correct answer:

The relationship cannot be determined.

Explanation:

Use the values of .5 and 2 as possible x values. If x = 2, Quantity A is positive and greater, but if x = .5, Quantity A is negative and therefore smaller. As such, the relationship cannot be determined.

Report an Error

Example Question #2 : How To Subtract Decimals

Solve for :

x + 0.238 = 0.999

Possible Answers:

x = 0.761

x = 0.981

x = 0.781

x = 0.861

x = 0.771

Correct answer:

x = 0.761

Explanation:

To solve for , subtract 0.238 from both sides of the equation. 0.999 - 0.238 = 0.761 , therefore, x = 0.761 .

If you have trouble subtracting the decimals, you can multiply both of them by 1000 to get whole numbers, then subtract as normal, then divide your result by 1000 .

Report an Error

Example Question #3 : How To Subtract Decimals

$0.327+\left(\frac{3}{8}-(0.048+2.176)\right)=?$

Possible Answers:

0.793

-1.522

1.242

0.0532

Correct answer:

-1.522

Explanation:

Make sure to follow the order of operations. Begin by combining all terms inside the parentheses:

$0.327+\left(\frac{3}{8}-(0.048+2.176)\right)=$

$0.327+\left(\frac{3}{8}-(2.224)\right)$

Convert the fraction to a decimal and once again complete the operations inside the parentheses:

$\frac{3}{8}=0.375$

0.327+(0.375-2.224)

0.327+(-1.849)

=0.327-1.849

=-1.522

The answer is -1.522 .

Report an Error

Example Question #12 : Decimals

find 0.7²

Possible Answers:

0.049

0.0049

4.9

0.49

Correct answer:

0.49

Explanation:

0.7 * 0.7 = 0.49

Trick: do the numbers without the decimals (7*7)

49; move the decimal of the answer the total number of spaces per each number (one for each 0.7)

0.49

Report an Error

All GRE Math Resources

13 Diagnostic Tests 452 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

GRE Tutors in Phoenix, Statistics Tutors in Washington DC, Reading Tutors in Houston, Physics Tutors in Atlanta, Statistics Tutors in Chicago, Biology Tutors in New York City, Reading Tutors in Phoenix, SAT Tutors in Chicago, Spanish Tutors in Denver, SSAT Tutors in Houston

Popular Courses & Classes

MCAT Courses & Classes in Phoenix, MCAT Courses & Classes in Los Angeles, SAT Courses & Classes in Philadelphia, MCAT Courses & Classes in Miami, SSAT Courses & Classes in Atlanta, ISEE Courses & Classes in Seattle, ISEE Courses & Classes in San Diego, GRE Courses & Classes in Seattle, Spanish Courses & Classes in Seattle, GMAT Courses & Classes in Houston

Popular Test Prep

GRE Test Prep in Washington DC, SAT Test Prep in Boston, SAT Test Prep in New York City, ACT Test Prep in Phoenix, ISEE Test Prep in Chicago, SAT Test Prep in Philadelphia, LSAT Test Prep in Los Angeles, ISEE Test Prep in Seattle, MCAT Test Prep in Seattle, ACT Test Prep in Denver

DMCA Complaint

If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing the information described below to the designated agent listed below. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.

Your Infringement Notice may be forwarded to the party that made the content available or to third parties such as ChillingEffects.org.

Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially misrepresent that a product or activity is infringing your copyrights. Thus, if you are not sure content located on or linked-to by the Website infringes your copyright, you should consider first contacting an attorney.

Please follow these steps to file a notice:

You must include the following:

A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; An identification of the copyright claimed to have been infringed; A description of the nature and exact location of the content that you claim to infringe your copyright, in \ sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require a link to the specific question (not just the name of the question) that contains the content and a description of which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Your name, address, telephone number and email address; and A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the information contained in your Infringement Notice is accurate, and (c) under penalty of perjury, that you are either the copyright owner or a person authorized to act on their behalf.

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors LLC
101 S. Hanley Rd, Suite 300
St. Louis, MO 63105

Or fill out the form below:

Do not fill in this field

Contact Information

* Full legal name

Company name

* Phone number

* Email address

Address

* Address1

Address2

* City

* State

* Zipcode

* Country

Complaint Details

* URL of copyrighted work (where your original material is located)

* Please describe the copyrighted work so that it may be easily identified

I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.

This notification is accurate.

I acknowledge that there may be adverse legal consequences for making false or bad faith allegations of copyright infringement by using this process.

* Signature (your digital signature is legally binding)

Email address:
Your name:
Feedback:

GRE Math : Decimal Operations

Study concepts, example questions & explanations for GRE Math

All GRE Math Resources

Example Questions

Example Question #1 : How To Add Decimals

Example Question #1 : Decimals

Example Question #1 : Decimals

Example Question #361 : Arithmetic

Example Question #5 : Decimals

Example Question #1 : Decimals

Example Question #1 : How To Subtract Decimals

Example Question #2 : How To Subtract Decimals

Example Question #3 : How To Subtract Decimals

Example Question #12 : Decimals

All GRE Math Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details