1.10^3=1000

2.10^6=1000000

3.10^9=1000000000

4.10^14=100000000000000

4 answers

10^3= 10000
Put the decimal after the 10 and move it over 3 places. Do the rest that way.
http://www51.wolframalpha.com/input/?i=10^3

Use Wolfram as a place to check your answers.
I'm sorry anonymous! You're right, I'm wrong.
Surprisingly well-written and inofmriatve for a free online article.