Find the sum by suitable rearrangement:
(a) 837 + 208 + 363 (b) 1,962 + 453 + 1,538 + 647
Solution (a)
837 + 208 + 363 = 837 + 363 + 208 = (837 + 363) + 208 = 1,200 + 208 = 1,408
Solution (b)
1,962 + 453 + 1,538 + 647 = 1,962 + 1,538 + 453 + 647
= (1,962 + 1,538) + (453 + 647) = 3,500 + 1,100 = 4,600
manisha says
your answer correct all the best friends