 # GMAT Math Help

Need some free GMAT math help?
We have a collection of videos, games, activities and worksheets that are suitable for the GMAT Math or GMAT Quantitative Section.

In these lessons, we will look at

• Tips and strategies for the GMAT.
• Worked solutions for some GMAT practice tests.
• Concepts that you will need to know for the GMAT Math sections.

### GMAT Tips and Strategies

 What is GMAT? GMAT Tips and Strategies GMAT Tips and Strategies Quantitative Section GMAT Tips and Strategies Verbal Section GMAT Math Tips I GMAT Math Tips II GMAT Math Tips III
Be familiar with the following directions so that you will not need to spend time reading them during the test.

### The Directions for the Problem Solving Section

Solve the problem and indicate the best of the answer choices given.
Numbers: All numbers used are real numbers.
Figures: A figure accompanying a problem solving question is intended to provide information useful in solving the problem. Figures are drawn as accurately as possible. Exceptions will be clearly noted. Lines shown as straight are straight, and lines that appear jagged are also straight. The positions of points, angles, regions, etc., exist in the order shown, and angle measures are greater than zero. All figures lie in a plane unless otherwise indicated.

### The Directions for the Data Sufficiency Section

Each data sufficiency problem consists of a question and two statements, labelled (1) and (2), which contain certain data. Using these data and your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of the word counterclockwise ), decide whether the data given are sufficient for answering the question and then indicate one of the following answer choices.
• 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 sufficient, but NEITHER statement ALONE is sufficient
• EACH statement ALONE is sufficient
• Statements (1) and (2) TOGETHER are not sufficient

Note:  In data sufficiency problems that ask for the value of a quantity, the data given in the statements are sufficient only when it is possible to determine exactly one numerical value of the quantity.
Numbers: All numbers used are real numbers.
Figures:

• Figures conform to the information given in the question, but will not necessarily conform to the additional information given in statements (1) and (2).
• Lines shown as straight are straight, and lines that appear jagged are also straight.
• The positions of points, angles, regions, etc., exist in the order shown, and angle measures are greater than zero.
• All figures lie in a plane unless otherwise indicated.

### GMAT Practice Tests

The following are worked solutions in videos based on the The Official Guide for GMAT Review.

Free Worked Solutions in videos for GMAT Problem Solving Math Questions

 GMAT Problem Solving Questions 1-29, pages 152-156 GMAT Problem Solving Questions 30-60, pages 156-159 GMAT Problem Solving Questions 61-86, pages 160-163 GMAT Problem Solving Questions 87-109, pages 163-166 GMAT Problem Solving Questions 110-132, pages 166-170 GMAT Problem Solving Questions 133-160, pages 170-173 GMAT Problem Solving Questions 161-179, pages 174 -176 GMAT Problem Solving Questions 180-200, pages 176-179 GMAT Problem Solving Questions 201-216, pages 179-181 GMAT Problem Solving Questions 217-236, pages 182-185 GMAT Problem Solving Questions 237- 247, pages 185-186

Free Worked Solutions in videos for GMAT Data Sufficiency Math Questions

 GMAT Data Sufficiency Questions 1-27, pages 278-279 GMAT Data Sufficiency Questions 28-50, pages 280-281 GMAT Data Sufficiency Questions 51-72, pages 281-283 GMAT Data Sufficiency Questions 73-90, pages 284-285 GMAT Data Sufficiency Questions 91-106, pages 285-287 GMAT Data Sufficiency Questions 107-120, pages 287-288 GMAT Data Sufficiency Questions 121-137, pages 288-289 GMAT Data Sufficiency Questions 138-150, pages 289-290 GMAT Data Sufficiency Questions 151-155, pages 290

### GMAT Quantitative Section

These are the topics that you will need to know for the GMAT Quantitative Section.

### Arithmetic Review

Since you cannot use a calculator in the GMAT Test, it will be helpful to review how to perform some arithmetic operations without a calculator.

Properties of Integers
 Factors, Multiples and Prime Numbers Prime Factorization Quotients and Remainders Even and Odd Integers (Rules) Consecutive Integers, Consecutive Odd Integers, Consecutive Even Integers Zero Property of Multiplication Identity Property of Addition and Multiplication
Fractions
 Equivalent Fractions Greatest Common Divisor Reduce Fractions to Lowest Terms I Reduce Fractions to Lowest Terms II Addition and Subtraction of Fractions Multiplication of Fractions Division of Fractions Mixed Numbers and Conversion Adding and Subtracting Mixed Numbers Multiplying and Dividing Mixed Numbers
Decimals
 Convert from Scientific Notation to Standard Notation Convert from Standard Notation to Scientific Notation Addition and Subtraction of Decimals Multiplication of Decimals Division of Decimals
Real Numbers
 Real Numbers Properties of Real Numbers Commutative, Associative, Distributive Absolute Values Adding and Subtracting Positive and Negative Numbers Multiplying and Dividing Positive and Negative Numbers
Ratio and Proportion
 Ratio and Proportion GMAT Questions Ratio and Proportion
Percents
 Percents, Decimals and Fractions Percents> 100% Percents l or < 1% Percent of a Number Percent Increase and Decrease Percent Change Solving Percent Problems Percents and their Applications GMAT Questions - Percent

Powers and Roots of Numbers
 Powers or Exponents of Numbers Square Roots Estimating Square Roots Square Root Word Problems I Square Root Word Problems II Cube Roots of Numbers GMAT Questions - Roots
Descriptive Statistics
 Mean, Median, Mode, Range Standard Deviation Frequency Distributionmean, median, mode, range, standard deviation GMAT Questions - Statistics
Sets
 Elements, Subset Union, Intersection, Disjoint or Mutually Exclusive Venn Diagrams I Venn Diagrams II Venn Diagrams Word Problems GMAT Questions - Sets
Counting Methods
 Multiplication Counting Principle Factorial Permutation Combination
Discrete Probability
 GMAT Probability Lessons Probability of Simple Events Complementary Events Independent Events(Multiplication Rule) Dependent Events (Multiplications Rule) Mutually Exclusive Events Addition Rule GMAT Questions - Probability I GMAT Questions - Probability II

### Algebra Review

Algebraic Expressions
 Combining Like Terms Dividing by Common Factors Multiply Two Algebraic Expressions Evaluating Algebraic Expressions Simplifying Algebraic Expressions
Solving Equations Solving Equations by Factoring
 Factor Perfect Square Trinomials Factor Difference of Squares Factor Sum and Difference of Two Cubes Factor Simple Trinomials Factor Trinomials Factor Trinomials by Guessing Solve Quadratic Equations by Factoring Solve Quadratic Equations - Quadratic Formula GMAT Questions - Equations GMAT Questions - Quadratic Equations
Rules of Exponents
 Positive, Zero and Negative Exponents Product Rule for Exponents Quotient Rule for Exponents Power Rule for Exponents Rules for Negative Exponents GMAT Questions - Exponents
Inequalities
Absolute Value
 Solving Absolute Value Equations Solving Absolute Value Inequalities GMAT Questions Inequalities and Absolute Value
Functions
 Domain and Range Composite Functions Sequence

### Geometry Review

Lines

Intersecting Lines and Angles Parallel Lines
 Corresponding Angles Alternate Interior Angles Co-Interior Angles Corresponding and Alternate Angles Problems involving Parallel Lines and Transversal GMAT - Diagonals, Lines and Symmetry
Polygons (Convex) Triangles
 Triangle Inequality Equilateral Triangles and Isosceles Triangles Right Triangles and the Pythagorean Theorem Area of Triangles Altitude of a Triangle
 Properties of Parallelograms Properties of Rectangles and Squares Properties of Rhombus Properties of Trapezoids
Circles
 Chord, Radius, Diameter Area of a Circle Circumference of a Circle Tangent, Point of Tangency Angles in Semi-Circles and Cyclic Quadrilaterals Inscribed and Circumscribed Circles Polygon Inscribed in Circle Circle inscribed in Polygon GMAT - Rectangles, Circles and Inscribed Angles
Rectangular Solids and Cylinders
 Surface Area of Rectangular Prism Surface Area of Cylinder Volume of a Rectangular Prism Volume of a Cylinder GMAT - Solid Shapes
Coordinate Geometry
 Coordinate Plane or Cartesian Plane Cartesian Plane - Plotting Points Distance between Two Points Slope of Line Graphing Horizontal and Vertical Lines Graphing Lines using the x-intercept and y-intercept Convert a linear equation from standard form to slope-intercept form Find the equation of a line using the Point Slope Form Equations for Parallel Lines Equations for Perpendicular Lines Graphical Solution to Systems of Equations Graphs of Linear Functions Graphs of Quadratic Functions - Parabolas GMAT - Coordinate Geometry
Extensive knowledge of theorems and the ability to construct proofs are not tested.

### Word Problems

 Rate Problems Work Problems Mixture Problems Simple Interest Problems Compound Interest Problems Discount and Sales Tax Problems Profit and Loss Problems Sets Word Problems
Geometry Problems
 Area Word Problems Volume Word Problems Angle Word Problems

### Data Interpretation

 Interpret Line Graphs Interpret Circle Graphs Pictographs Stem and Leaf Plots Frequency Tables Double Bar Graphs Histograms Line Plots Box and Whisker Plots Scatter Plot and Line of Best Fit Scatter Plots and Correlations

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. 