The gre anlytycal writting section 6 ppsx

■ To simplify a square root radical, write the radicand as the product of two factors, with one number

being the largest perfect square factor. Then write the radical of each factor and simplify.

Example:

8 = 4 2 = 22

Ratio

The ratio of the numbers 10 to 30 can be expressed in several ways, for example:

10 to 30 or

10:30 or

1

3

0

0

Since a ratio is also an implied division, it can be reduced to lowest terms. Therefore, since both 10 and 30

are multiples of 10, the above ratio can be written as:

1 to 3 or

1:3 or

1

3

Algebra Review

Congratulations on completing the arithmetic section. Fortunately, you will only need to know a small por￾tion of algebra normally taught in a high school algebra course for the GRE. The following section outlines

only the essential concepts and skills you will need for success on the GRE Quantitative section.

Equations

An equation is solved by finding a number that is equal to a certain variable.

SIMPLE RULES FOR WORKING WITH EQUATIONS

1. The equal sign seperates an equation into two sides.

2. Whenever an operation is performed on one side, the same operation must be performed on the other side.

3. Your first goal is to get all the variables on one side and all the numbers on the other.

4. The final step often is to divide each side by the coefficient, leaving the variable equal to a number.

–THE GRE QUANTITATIVE SECTION–

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