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The easy way to remember the look of an absolute value graph is that they are always a V-shape... and “V” stands for value. Or for verisimilitu...

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?

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...

What's easy, simple, and comfortable? Adding and subtracting double digit numbers. What's not-so-easy, the opposite of simple, and definitely not c...

Don’t you hate it when you have too many rational expressions—or too few? Thank goodness for addition and subtraction. We don’t know what we�...

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.

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.

We just had a brilliant idea for a new Transformer: Optimus Prime Factorization.

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

What do you do when you have to multiply large numbers but you can’t use a calculator? Long multiplication, of course. This video covers how to d...

Have plenty of scratch paper on hand before starting one of these problems. We’re not kidding when we say "long" division.

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.

SAT Math 1.4 Numbers and Operations. Solve the equation.

SAT Math 2.2 Algebra and Functions. What value of y is correct?

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...

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

SAT Math 1.4 Algebra and Functions. Solve for x.

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?