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 $n1$ 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
$10$


${10}^{1}=10$  ${10}^{1}=1$ 
${10}^{2}=100$  ${10}^{1}=0.1$ 
${10}^{3}=1000$  ${10}^{2}=0.01$ 
${10}^{4}=\mathrm{10,000}$  ${10}^{3}=0.001$ 
${10}^{5}=\mathrm{100,000}$ (one hundred thousand) 
${10}^{4}=0.0001$ (one ten thousandth) 
${10}^{6}=\mathrm{1,000,000}$ (one million) 
${10}^{5}=0.00001$ (one hundred thousandth) 
${10}^{7}=\mathrm{10,000,000}$ (ten million) 
${10}^{6}=0.000001$ (one millionth) 
${10}^{8}=\mathrm{100,000,000}$ (one hundred million) 
${10}^{7}=0.0000001$ (one ten millionth) 
${10}^{9}=\mathrm{1,000,000,000}$ (one billion) 
${10}^{8}=0.00000001$ (one hundred millionth) 
${10}^{10}=\mathrm{10,000,000,000}$ (ten billion) 
${10}^{9}=0.000000001$ (one billionth) 
Click here for more names for really big and really small numbers .