Question

How do you write 18,000,000,000 in scientific notation?

Answer 1

`1.8*10^10`

Explanation:

1. Count the zeros: `9`
   `=> 18*10^9`
2. Usually is written in form: `( 0 < "decimal number"< 10)*10^("numbers of zeros")`
   remember: `18=1.8*color(red)(10)`
   `=> 1.8*color(red)(10)*10^9=1.8*10^(9+color(red)(1))=1.8*10^(10)`