Question

Determine the sum by suitable re-arrangement of $627+808+373$.

Answer 1

Addition -

As per the associative property of addition of the whole number, if $a,b$ and $c$ are any three whole numbers, then :

$(a+b)+c=a+(b+c)=a+b+c$.

We observe that $27+73=100$.

We first add $627$ and $373$ as shown below :

$$\begin{gathered} 627+808+373 \\ =(627+373)+808 \\ =1000+808 \\ =1808 \end{gathered}$$

Hence, the required sum is $1808$.