Find the sum by suitable rearrangement: (a) 837 + 208 + 363 (b) 1962 + 453 + 1538 + 647

Question – Find the sum by suitable rearrangement: (a) 837 + 208 + 363 (b) 1962 + 453 + 1538 + 647

Solution

(a) 837 + 208 + 363

= 208 + (837 + 363)

Adding the numbers in the parentheses, we get

= 208 + 1200

Now, adding both numbers, we get

= 1408

(b) 1962 + 453 + 1538 + 647

= (1962 + 1538) + (453 + 647)

Adding the numbers in the parentheses, we get

= 3500 + 1100

Now, adding both numbers, we get

= 4600

Hence, the sum by suitable rearrangement of 837 + 208 + 363 is 1408 and 1962 + 453 + 1538 + 647 is 4600

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