Question

Out of the following options, which will be the best estimation for $499+302$ by rounding to the nearest hundreds?

• A. $800$
• B. $750$
• C. $700$

Answer 1

The correct option is A $800$

To make an estimation of the resultant, we will first round up the numbers.

In $499$, its tens place digit is greater than 5 so, it can be rounded up to $500$. In the number line, 499 is more close to 500

In $302$, its tens place digit is less than 5 so, it can be rounded down to $300$. In the number line 302 is more close to 300.
Now adding the rounded off numbers we get $500+300=800$

So we can say $499+302\approx 800$ which is a good estimation.

Now let us check with the original sum,
$499+302=801$ which is very close to our estimated answer.