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GRE quantitative section is comprised almost entirely of concepts taught in high school Mathematics. ETS divides these concepts into four broad content areas, namely arithmetic, algebra, geometry and data analysis. This is the first part of a comprehensive guide covering these four areas:

# I. ARITHMETIC

1. Arithmetic Operations: Tests basic addition, subtraction, multiplication, division, the order in which these operations are performed in simplifying an expression, and how numbers are grouped together through parentheses, fraction bars etc.
2. Exponents & Roots: Exponents are numeric superscripts that determine how many times a number gets multiplied by itself. Roots are the inverse of exponents. GRE tests simplifications involving exponents and roots.
3. The Number Line: All real numbers can be graphically represented by marking them on a straight line, like graduations on a ruler. Quantitative section tests the ability to interpret and compare numbers and distances shown on a number line.
4. Odd & Even Integers: Arithmetic with odd and even integers is part of a greater topic on the GRE namely integer properties.
5. Divisibility & Factorization: Part of the integer properties, it requires the understanding of how integers get evenly divided by other integers, and how different integers combine to form other integers.
6. Prime Numbers: Prime numbers are a special category of integers with wide applicability across arithmetic, particularly questions related to integer properties.
7. Remainders: Remainder is what is left behind when an integer doesn’t divide evenly by another integer.
8. Percent: The ability to measure and interpret percentages and percentage changes is an important part of what the GRE quantitative tests.
9. Ratio: Ratios, like percentages, are fractional quantities and are tested on the GRE.
10. Rate: Speeds, rates of work and similar concepts involving rates are tested.
11. Absolute Value: Defined as the positive distance on the number line of a number from the zero, absolute value is tested as part of expressions, equations and inequalities.
12. Decimal Representation: Understanding of decimal places, rounding, and conversion between decimals and fractions is tested.
13. Estimation: Intelligent approximation is a skill that is absolutely crucial to save precious time on the quantitative section.
14. Sequences of Numbers: Every test taker should be able to recognize patterns in sequences of numbers, and be able to mathematically calculate missing terms in sequences of numbers.

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