Question

How do you write `0.0025 × 111.09` in scientific notation?

Answer 1

Scientific notation means writing all numbers as a number between 1 and 10 multiplied by the appropriate powers of ten.
Therefore the numbers given can be written as
`2.5*10^-3 *1.1109 *10^2`
`2.5*1.1109 *10^-1`