# Computing with scientific notation

6 videos
2 skills
You already understand what scientific notation is. Now you'll actually use it to compute values and solve real-world problems.

### Multiplying three numbers in scientific notation

VIDEO 7:35 minutes
Multiplying really big or really small numbers is much easier when using scientific notation. This video gives an example of multiplying three numbers that are written in scientific notation.

### Scientific notation word problem: speed of light

VIDEO 4:27 minutes
Amazingly, we can figure out how far the sun is from the earth if we know how to multiply numbers in scientific notation.

### Scientific notation word problem: U.S. national debt

VIDEO 6:21 minutes
Ever wonder what your part of the national debt is? It might surprise you. What isn't surprising is that you can use scientific notation and division to figure out the answer.

### Multiplying & dividing in scientific notation

VIDEO 2:53 minutes
Learn how to simplify a multiplication and division expression using scientific notation. The expression in this problem is (7 * 10^5) / ((2 * 10^-2)(2.5 * 10^9)).

### Multiplying & dividing in scientific notation

PRACTICE PROBLEMS
Practice expressing products and quotients in scientific notation.

### Simplifying in scientific notation challenge

VIDEO 5:52 minutes
Sal simplifies a very hairy expression that involves quantities in scientific notation.

### Scientific notation word problem: red blood cells

VIDEO 4:46 minutes
Vampires and math students want to know: How many red blood cells are in the a human body? We can find the answer using scientific notation.

### Scientific notation challenge

PRACTICE PROBLEMS
Practice solving more challenging problems involving scientific notation.