Question

Find the sum of the following by short-cut method.

$73245+999$

Answer 1

Finding the sum using short-cut method.

We know that $999=1000-1$.

$\begin{array}{rcl}73245+999& =& 73245+\left(1000-1\right)\\ & =& \left(73245+1000\right)-1\\ & =& 74245-1\\ & =& 74244\end{array}$(Using associative property)

Hence, the required answer is $74244$.