Question

Simplify the following expression:
$600-42.5+3.5$

Answer 1

Hint: To simplify the given expression $600-42.5+3.5$. First of all, add the numbers 600 and 3.5. Now, rewrite the number 600 in terms of decimal as 600.0. Then add the two numbers. Afterward, subtract 42.5 from the result of this addition to get the required simplification.

Complete step by step answer:
We have to simplify the following expression:
$600-42.5+3.5$
To simplify the above expression, first of all, we are going to add 600 with 3.5.
To add 600 with 3.5 we have to express 600 with a decimal for the smoother addition.
Expressing 600 in the decimal form we get,
600.0
Now, adding 600.0 with 3.5 we get,
$\begin{align}
  & \text{ }600.0 \\
 & \dfrac{+03.5}{603.5} \\
\end{align}$
The given expression is now reduced to:
$603.5-42.5$
There is no further change required in the above numbers to do the subtraction so moving on towards the subtraction of the above numbers we get,
$\begin{align}
  & 603.5 \\
 & \dfrac{-42.5}{561.0} \\
\end{align}$
Hence, the simplification of the expression given in the above problem is 561.0.

Note:
The other way of solving the above problem as follows:
The expression given in the above problem is:
$600-42.5+3.5$
Now, we are first of all subtracting 42.5 from 600 and we get,
For that we are writing 600 in the decimal form as follows:
$600.0$
Now, subtracting 42.5 from 600.0 we get,
$\begin{align}
  & 600.0 \\
 & \dfrac{-42.5}{557.5} \\
\end{align}$
By doing this subtraction, the expression given in the above problem is reduced to:
$557.5+3.5$
Now, adding the above two numbers we get,
$\begin{align}
  & 557.5 \\
 & \dfrac{+03.5}{561.0} \\
\end{align}$
Hence, we have simplified the above expression to 561.0.
You can see that the alternative method which we have just shown is giving us the same result like the one which is getting in the above solution so you can use this alternative method to cross-check your answer also.