Powers of $10$

The powers of $10$ are easy to remember, because we use a base $10$ number system.

For $10^{n}$ with $n$ a positive integer, just write a " $1$ " with $n$ zeros after it. For negative powers $10^{- n}$ , write " $0$ ." followed by $n - 1$ zeros, and then a $1$ .

The powers of $10$ are widely used in scientific notation , so it's a good idea to get comfortable with them.

Powers of $10$

10^{1} = 10

10^{1} = 1

10^{2} = 100

10^{-1} = 0.1

10^{3} = 1000

10^{-2} = 0.01

10^{4} = 10,000

10^{-3} = 0.001

$10^{5} = 100,000$

(one hundred thousand)

$10^{-4} = 0.0001$

(one ten thousandth)

$10^{6} = 1,000,000$

(one million)

$10^{-5} = 0.00001$

(one hundred thousandth)

$10^{7} = 10,000,000$

(ten million)

$10^{-6} = 0.000001$

(one millionth)

$10^{8} = 100,000,000$

(one hundred million)

$10^{-7} = 0.0000001$

(one ten millionth)

$10^{9} = 1,000,000,000$

(one billion)

$10^{-8} = 0.00000001$

(one hundred millionth)

$10^{10} = 10,000,000,000$

(ten billion)

$10^{-9} = 0.000000001$

(one billionth)

Click here for more names for really big and really small numbers .

Powers of 10

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Powers of $10$