Khan Academy: Solving Hard Problems

The instructor uses the temperature formula to illustrate how the variables can be manipulated to solve a problem.

For most people, solving word problems takes a lot of work. But Sal makes it look simple! Follow along as he unpacks this complicated word problem. He even demonstrates how to answer. Excellent!

Sal uses the formula for the perimeter to show how the variables can be moved around to solve a problem. He demonstrates a few different ways to do this.

Sal uses the formula for the perimeter to show how the variables can be moved around to solve a problem. He demonstrates a few different ways to do this.

A video that demonstrates how to write and solve equations for several different types of algebraic word problems. This is another percent example. This video is also found in the strand Algebra: ck12.org. [11:06]

Video features a simple example of solving for time given distance and rate. [9:34]

This video demonstrates how to solve two different word problems that involve linear relationships. In order to solve the problem an equation must be written and then the video demonstrates how to solve for a particular variable in the...

A step-by-step breakdown on how to solve ratio problems using algebra. Practice problems available. [5:12]

A step-by-step breakdown on how to approach and solve a problem involving weight and converting between units. [7:08]

A video demonstrating how to solve a problem involving time.