0.209 in scientific notation

Question

Hi I'm struggling with scientific notation ... Please help

Answer 1

In scientific notation, you take a number between 1 and 10 and multiply it by 10ⁿ.  n is the number of places that you move the decimal to make the number between 1 and 10.  n is positive if you move the decimal point from the left and n is positive if you move the decimal point from the right.

 

Move the decimal point one place to the right.  You end up with

2.09

 

Multiply that number by 10ⁿ.

2.09 × 10ⁿ

 

 

You moved the decimal one place from the left to make the number 2.09    n = -1

2.09 × 10^-1

 

 

Your result is

2.09 × 10^-1