All GRE Math Resources
Example Questions
Example Question #1031 : Gre Quantitative Reasoning
A clothing store can only purchase socks in crates. Each crate has 200 socks and costs $2091.
Quantity A: The amount of socks that can be bought with $12651.
Quantity B: The amount of socks that can be bought with $14574.
Quantity A is greater.
The two quantities are equal.
The relationship cannot be determined.
Quantity B is greater.
The two quantities are equal.
For this problem, realize that the store cannot buy part of a crate of socks. If they only have enough to pay for part of a crate, they might as well not have any money at all.
For the amount of money listed, figure out how many crates can be purchased:
Quantity A
So six crates can be purchased.
Quantity B:
Not quite enough for seven; only six crates can be purchased.
The two quantities are equal.
Example Question #264 : Arithmetic
Write 0.45 as a fraction.
.45 is equivalent to 45 out of 100, or .
Divide both the numerator and denominator by 5 to simplify the fraction:
Example Question #32 : Fractions
Choose the answer below which best expresses the following decimal as a fraction (choose the answer which has been reduced/simplified the most):
To convert from a decimal to a fraction, simply put the digits over followed by a number of zeroes equal to the number of digits:
Then, you can reduce:
Example Question #33 : Fractions
Choose the answer below which best expresses the following decimal as a fraction (choose the answer which has been reduced/simplified the most):
To convert from a decimal to a fraction, simply put the digits over one followed by a number of zeroes equal to the number of digits:
is prime, so there's no way to reduce. You're done!
Example Question #34 : Fractions
Choose the answer below which best expresses the following decimal as a fraction (choose the answer which has been reduced/simplified the most):
To convert from a decimal to a fraction, simply put the digits over one followed by a number of zeroes equal to the number of digits:
The zero in front of the can be removed, leaving: , which can be reducted to:
Example Question #35 : Fractions
Choose the answer below which best expresses the following decimal as a fraction (choose the answer which has been reduced/simplified the most):
To convert from a decimal to a fraction, simply put the digits over one followed by a number of zeroes equal to the number of digits:
You cannot reduce, as one of the numbers in the fraction is prime, so that's your final answer.
Example Question #23 : Decimals With Fractions
Choose the answer below which best expresses the following decimal as a fraction (choose the answer which has been reduced/simplified the most):
To convert from a decimal to a fraction, simply put the digits over one followed by a number of zeroes equal to the number of digits:
Then, you can reduce for your final answer:
Example Question #451 : Arithmetic
What is the result of adding of to ?
Let us first get our value for the percentage of the first fraction. 20% of 2/7 is found by multiplying 2/7 by 2/10 (or, simplified, 1/5): (2/7) * (1/5) = (2/35)
Our addition is therefore (2/35) + (1/4). There are no common factors, so the least common denominator will be 35 * 4 or 140. Multiply the numerator and denominator of 2/35 by 4/4 and the numerator of 1/4 by 35/35.
This yields:
(8/140) + (35/140) = 43/140, which cannot be reduced.
Example Question #1032 : Gre Quantitative Reasoning
Reduce to simplest form:
Simplify expressions inside parentheses first: and
Now we have:
Add them by finding the common denominator (LCM of 4, 2, and 3 = 12) and then multiplying the top and bottom of each fraction by whichever factors are missing from this common denominator:
Example Question #453 : Arithmetic
Quantity A:
Quantity B:
Which of the following is true?
The two quantities are equal.
Quantity A is larger.
Quantity B is larger.
The relationship between the two quantities cannot be determined.
The two quantities are equal.
Start by looking at Quantity A. The common denominator for this expression is . To calculate this, you perform the following multiplications:
This is the same as:
, or
This is the same as Quantity B. They are equal!