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### Course: MAP Recommended Practice > Unit 34

Lesson 42: Powers of 10# Powers of 10 review

Review the powers of 10 and try some practice problems.

## Summary of powers of $10$

## How do we evaluate powers of $10$ ?

To evaluate a power of $10$ , we multiply the base $(10)$ by itself the exponent amount of times.

**Example:**

## The pattern

The number of zeros in the solution always matches the exponent.

**Example:**

*Want to learn more about powers of ten? Check out this video.*

## Want to join the conversation?

- how do you make a power of ten?(17 votes)
- It is simple a power of ten is just how many zeros it has for example 10^6 (Ten the power of 6) would have 6 zeros like this 1,000,000 which is One million. So to sum up 10^6= 1,000,000. Easy if you really think about it(74 votes)

- Khan Academy you had taught me so much so i want to keep getting better in math and more things,thank you khan Academy.(45 votes)
- no prpblem

thank you(1 vote)

- why is powers of ten so easy?(28 votes)
- cause all you do is add 0's(20 votes)

- When you divide a negative by a negative, would it be a positive or a negative?(15 votes)
- It would be positive. Just like in multiplication, if they're both positive or negative, it will be positive. If both numbers are different (in terms of being positive/negative) then the resulting quotient should be negative, assuming you did the math right!(13 votes)

- This was pretty easy basically I would look at the exponents, (EX : 10^4) then I would see which has 4 zeros (If this helped I hope you can up vote :D) (Its okay if now)(17 votes)
- What I do is I just count how many zeros there is in a number ex. 100,000, since there is five zeroes this number is 10 to the power of 5. I hope you found this helpful!(15 votes)
- This was a lot better than the videos thanks!! :)(2 votes)

- why is this so easy! this is so easy I bet my younger sib would get this in a heart beat! why is this so easy!? we should be learning something harder!(8 votes)
- dont be too confident! I learned that the hard way. Its good to be confident but not overconfident.(15 votes)

- How is your day(10 votes)
- Good how is yours?(3 votes)

- This is pretty easy hah. But that makes it fun, tbh :)(10 votes)
- how many are in the power of ten(9 votes)
- 10,000,000,000(2 votes)