Question

Question 1(a)

Find the sum by suitable rearrangement:
837 + 208 + 363

Answer 1

We can arrange the calculation in such a way that it becomes easy and quick to find the answer.

837 + 208 + 363 can be represented as :

= (837 + 363) + 208.

We club 837 and 363 as the last digits of each number i.e 7 and 3 respectively add up to 10. So the last digit of their sum will be 0. This will be easier to compute the entire sum as:

= 1200 + 208

= 1408