GMAT Math Concepts
INTEGERS: Whole numbers not in decimals.
Ex: -20, 0, 15
CONSECUTIVE INTEGERS: Integers in counting order.
Ex: 11,12,13,14
REMAINDER: The integer left over after dividing a number into another.
Ex: 14/6 = 2 R2
300/70 = 4 R20
DIVISIBILITY
If 5w + 3v = 13, what is the value of vw ?
(1) w > 0
(2)
Statement (1) ALONE is sufficient, but
statement (2) alone is not sufficient
Statement (2) ALONE is sufficient, but
statement (1) alone is not sufficient
Both statements TOGETHER are
Is the integer
ARITHMETIC
ORDER OF OPERATIONS: Parenthesis, Exponents, Multiplication/Division,
Addition/Subtraction
FRACTIONS:
Adding and subtracting: Must have common denominator.
Multiplying: Multiply numerators and denominators straight across.
Dividing: Flip second
GMAT Overview
Standardized test in three parts: analytical writing, math, and verbal
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o
Math and verbal scores are combined to a total score of 800
Writing section is graded on a scale from 0-6 by a human grader
Test is computer adaptive- if you get a qu
Math
Equations
Inequalities
Simultaneous Equations
Quadratic Equations
Factoring
Solving Equations
Goal
is to isolate a variable on one
side of the equation
Any
operation must be performed to
both sides to keep equality
x + 6 = 2x + 10
-x
-x
4x = 30 + 2x
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Lines
The equation of a line is in the form
y = mx + b
x, y: variables
m: slope
b: y intercept
The slope is how steep/flat the line is. It is calculated by y/x, or rise/r
Math
Probability
Combinations
Permutations
Probabilityformula:
(wantedoutcomes)(possibleoutcomes)
Addtofindcombinedprobabilities(oddsthatA
ORBwillhappen)
Multiplytofindsharedprobabilities(oddsA
ANDBwillhappen)
Probability
Theprobabilityofsomethingnothappe
Arithmetic
Distance Problems
Work Problems
Functions
Distance Problems
Distance
= Rate x Time
Rate
= Distance Time
Time
= Distance Rate
Be
sure to convert everything to same
measurements (miles, seconds, etc)
Distance Problems
A passenger train leaves t