Question

The length of an object is measured as 25.8 centimeters. What is the length in scientific notation?

Answer 1

Answer ---> 2.58*10^1

So, when you write 10^n, you have to move the comma n times.

So you move the comma 1 time from 2.58 (moved the comma 1 time on the left) to the right and get 25.8

Answer 2

scientific notation says, "leave only one guy to the left of the decimal point", so... 25.8 needs to turn to 2.58 then... multiplied by some power of 10, we just need to move the dot over one spot, so 10 at the 1 power,
`\bf 2.58* 10^1\implies 2.58* 10`