Math Videos

Overview of the Khan Academy Library

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Sal of Khan Academy offers an overview of all of the videos in the Khan Academy [...]

Inequalities Using Addition and Subtraction

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Sal of Khan Academy explains how to understand inequalities using addition and subtraction. Get some great [...]


Subtracting Mixed Numbers Word Problem

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Sal of Khan Academy explains how to simplify word problems to the basic numerical question. Get [...]

More on Unit Vector Notation

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Sal from Khan Academy reveals that adding the x and y components of two vectors is [...]


Addition and Subtraction with Significant Figures

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Sal from Khan academy explains how to add and subtract with the right level of precision [...]

Complex Numbers

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Sal from Khan Academy offers an introduction to complex numbers and the imaginary i. Learn how [...]


Adding and Subtracting Polynomials 3

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Sal from Khan Academy tackles more difficult examples of adding and subtracting polynomials. This more challenging [...]

Decimal Place Value

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Sal from Khan Academy explains how to find the place value of a digit within a [...]

Partial Fraction Expansion 3

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Sal of Khan Academy covers more partial fraction expansion problems to show you another type of [...]

Adding Fractions with Like Denominators

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Sal of Khan Academy demonstrates how to add fractions that have the same denominator. After his [...]

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