Section: Mathematics

19) Written in scientific notation, the number 173,000,000,000 is:

1. 17.3 x 1010
2. 173 x 109
3. 1.73 x 1011
4. 1.73 x 1010
5. .172 x 1012

Place a decimal point at the end of the number and then move it eleven places to the left, until it creates a number between one and ten.