How do you simplify #3.0 times 10^-3 kg#?
Assuming that you mean get rid of the scientific notation, this is how you would 'simplify' it.
First we want to write out the decimal form:
Now we multiply it out to get
Next we want to convert this to grams to get rid of the decimal.
Now we can cross multiply:
You can remove the 1's on the bottom because dividing by one is the same as just the number.
This can be simplified to just