Question

Shyam wants to add the numbers 2860, 6240 and 1942. Which of these would give him the best estimate?

• A. $2000+6000+1000$
• B. $3000+6000+2000$
• C. $2000+6000+2000$
• D. $2000+7000+1000$

Answer 1

The correct option is B $3000+6000+2000$

To find the sum of the numbers given, Shyam has to round the numbers to the nearest thousands.

$2860\to 3000$
$6240\to 6000$
$1942\to 2000$

Thus, Shyam would end up with a sum closer to the correct one if he uses the sum $3000+6000+2000.$