As you prepare for the Quantitative Reasoning measure of the GRE^{®} General Test, we want you to be aware of another free resource that may be helpful to you. Using instructional videos, the Khan Academy website provides additional explanations of concepts in the Math Review for the Quantitative Reasoning Measure of the GRE General Test (PDF).
For each topic in the Math Review, the table below provides links to relevant sections on the Khan Academy website that contain instructional videos on the topic. Note that some videos in the referenced sections may contain content that does not appear on the GRE Quantitative Reasoning measure. For example, the group of videos labeled "GEOMETRY: Right triangles and trigonometry" contains videos involving trigonometry, which does not appear on the measure.
ETS is not responsible for content on the Khan Academy website; if you experience difficulties when viewing the videos, visit the Khan Academy Help Center to troubleshoot or report a problem.
GRE Math Review Topic 
Relevant Section on Khan Academy Site 
1.1 Integers 

1.2 Fractions 

1.3 Exponents and Roots 

1.4 Decimals 
See "Rational and Irrational Numbers" subsection. 
1.5 Real Numbers 
See "Inequalities: Greater Than and Less Than Basics" subsection. 
1.6 Ratio 

1.7 Percent 

Sections 2.1 through 2.9 

2.1 Operations with Algebraic Expressions 

2.2 Rules of Exponents 

2.3 Solving Linear Equations 

2.4 Solving Quadratic Equations 

2.5 Solving Linear Inequalities 

2.6 Functions 

2.7 Applications 

2.8 Coordinate Geometry 

2.9 Graphs of Functions 

3.1 Lines and Angles 

3.2 Polygons 

3.3 Triangles 

3.4 Quadrilaterals 

3.5 Circles 

3.6 ThreeDimensional Figures 

4.1 Graphical Methods for Describing Data 
See "Reading and Interpreting Data" subsection. See "Scatter Plots" subsections. 
4.2 Numerical Methods for Describing Data 

4.3 Counting Methods 

4.4 Probability 

4.5 Distributions of Data, Random Variables, and Probability Distributions 

4.6 Data Interpretation Examples 
See "Reading and Interpreting Data" subsection. 
The videos on the Khan Academy website are the property of Khan Academy and are not produced by ETS. As such, ETS takes no responsibility for the accuracy of the material in the videos.