At the start of 2012, the population of the United States was approximately 313,269,000. What is this number written in scientific notation?
In scientific notation, we write a number so that it has single digit to the left of decimal sign and is multiplied by an integer power of
Note that moving decimal
Hence, we should either divide the number by
In other words, it is written as
Hence in scientific notation
Objective: have a single non zero digit to the left of the decimal point. In doing this you have changed the value so a mathematical correction will need to be applied.
Multiply by 1 but in the form of