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Converting units (US customary)
By Khan Academy
What's the difference between gallons, quarts, pints, and cups? Soooo many people go their entire lives without knowing how to convert one unit of measure to another. Take note.
Converting multi-digit repeating decimals to fractions
By Khan Academy
Learn how to convert the repeating decimals 0.363636... and 0.714714714... and 3.257257257... to fractions.
Divide polynomials by linear binomials with remainders
By Khan Academy
Sal divides (x^3+5x-4) by (x^2-x+1) using long division.
Converting between slope-intercept and standard form
By Khan Academy
Standard form to slope-intercept form
Find the reflection that maps a given figure to another
By Khan Academy
Sal introduces geometric transformations! Specifically, he explains what the image of a transformations is, what are the rigid transformations, and which transformations are not rigid.
Find the dilation that maps a given figure to another (advanced)
By Khan Academy
Sal shows how to perform a dilation on a hexagon using our interactive widget!
Evaluating expressions with variables word problems
By Khan Academy
Learn how to evaluate an expression with variables using a technique called substitution (or plugging in).
Exponents with negative fractional bases
By Khan Academy
See examples of multiplying and dividing fractions with negative numbers.