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ACT Math Pre-Algebra Drill 3, Problem 3. Find the absolute value.

ACT Math: Pre-Algebra Drill 4, Problem 1. What could the number described in the video be?

Check out this video to learn more about absolute value and how it has no patience for negative signs.

Solving two-step equations can be tricky, but at least they’re easier than doing the Texas Two-Step. We trip over our feet so often you’d think...

SAT Math 3.6 Numbers and Operations

Sometimes, we just want fewer y's...or more x's. That's why it's great to know how to add and subtract variables. In real life, though, we try to a...

ACT Math Elementary Algebra Drill 4, Problem 2. Solve for x.

ACT Math: Pre-Algebra Drill 2, Problem 1. Solve for x in this equation.

ACT Math Pre-Algebra: Drill 2, Problem 2. Solve for y.

OMG you should totes watch this vid. LOL. It’s all about LCM and GCF… FTW. Least Common Multiple and Greatest Common Factor, here we come....

This video covers Least Common Multiple and Greatest Common Factor. What are they? How do you find them? How does factorization play in?

Number Sense: Drill Set 5, Problem 1. Solve the equation.

This video helps you tackle two-step equations with multiplication and division by using the opposite operation on each side of the equation. Defin...

Leftovers are good. Remainders are not.

Just because some numbers are only a single digit, doesn't mean they don't still deserve a little love.

CAHSEE Math Algebra and Functions: Drill Set 1, Problem 4. Which operation should be performed first?

Algebra and Functions: Drill Set 3, Problem 2. Simplify the expression in this video.

Algebra and Functions Drill 3 Problem 4. Simplify the expression.

Numbers have friends in high places: they're called powers. And yes, they are powerful. They can make a single digit number turn into a 10 digit nu...

Exponents desperately want to be like regular ol' numbers—so it figures they also want to be multiplied and divided.

Those itty-bitty exponents are difficult to read as it is. Now they're going to be even smaller—and include fractions? Someone had better get us...

Get back to your roots with this video.

Please be advised that Shmoop does not endorse owning a pet Stegosaurus. The character in this video is a professional—do not attempt at home.

SAT Math 3.2 Numbers and Operations

Ever wish you didn't have to write out all those zeros when you counted your mounds of money? Well, there's a solution for that: scientific notatio...

CAHSEE Number Sense: Drill Set 1, Problem 1. How would he write the number in scientific notation?

CAHSEE Math Number Sense: Drill Set 1, Problem 2. The decimal 0.000035 can be written in scientific notation as...what?