Question

Estimate the following sum by rounding off the numbers to their nearest thousands and compare the result with the actual sum: $34,253+5,524$

Answer 1

Step 1: Round-off the given numbers to their nearest thousands and find their sum.

$34,253$ rounded off to the nearest thousands = $34,000$

$5,524$rounded off to the nearest thousands = $6,000$

Therefore, their estimated sum = $34,000+6,000$ = $40,000$

Step 2: Find the actual sum of given numbers.

Actual sum = $34,253+5,524$ = $39,777$

Step 3: If the estimated sum is close to the actual sum then the answer is a good estimate or else the answer is not a good estimate.

Since, estimated sum, here, $40,000$ is close to the actual sum, here, $39,777$. So, the answer is a good estimate.

Hence, the sum by rounding off the numbers to their nearest thousands is $40,000$ and the answer is a good estimate.