How do you write #42,000# in scientific notation?
These take a little bit of getting used to.
Multiply by 1 and you do not change the inherent value. 1 can be written in many ways. So you can change the way something looks without changing its inherent value.
Example: multiply 3 by 1 but in the form of
The objective is to have just 1 non zero value to the left of the decimal point and everything else to its right.
Multiply by 1 but in the form of