Question

I need an explanation on how I can subtract Scientific Notation

Answer 1

To perform the required calculation, we need to transform the first term into a scientific notation, or the second one in normal number, then we perform the calculation.

Transforming the first one into scientific notation, we have the following:

`0.00045=4.5*10^(-4)=45*10^(-5)`

To solve the present problem, we will use the same order for the number 10. This will allow us to make the following:

`\begin{gathered} 45*10^(-5)-2.5*10^(-5)=\left(45-2.5\right?*10^(-5) \\ =42.5*10^(-5) \end{gathered}`

now, we need to transform it in such a way that the number is between 1 and 10, as follows:

`42.5*10^(-5)=4.25*10^(-4)`

From the solution developed above, we are able to conclude that the answer to the proposed problem is:

`4.25*10^(-4)`