Question

Ben has a collection of 812 stamps. He gives his brother 345 stamps. About how many stamps does Ben have left?

Answer 1

Hint: We start solving the problem by assuming the variable for the total number of stamps left with Ben. We then find the value of f by subtracting the number of stamps that were given to his brother from the total number of stamps actually present with him at the start to get the required value of the stamps left.

Complete step by step answer:
According to the problem, we are given that Ben has a collection of 812 stamps and he gave 345 stamps to his brother. We need to find the number of stamps that Ben had with him finally.
Let us assume the number of stamps that Ben had finally been f.
So, f will be the number that can be found by subtracting the number of stamps given to his brother from the total number of stamps. Let us perform the subtraction to find the number of remaining stamps with Ben.
We have $f=812-345$.
$\Rightarrow f=467$.
So, we have found that Ben has 467 stamps left with him.

$\therefore $ The number of stamps left with Ben are 467stamps.

Note: Whenever we get this type of problems, we first assume variables for the unknowns present in the problem to avoid confusion. We can also find the percentage of stamps left with Ben using the obtained result of this problem. We should not write the result as 477 stamps instead of 467 stamps which is the common mistake done by students. Similarly, we can expect problems to find the percentage of stamps given to his brother by Ben.