Question

Estimate the difference by rounding off the number to the nearest hundreds:$629-485$

Answer 1

Step 1. Rounding off the numbers to the nearest hundred.

• As $629$ lies between $600$ and $700$

Since $629$ is nearest to $600$ than to $700$.

Therefore $629$ rounded off to the nearest hundred as $600$..

• Also $485$ lies between $400$ and $500$

Since $485$ is nearest to $500$ than to $400$.

Therefore $485$ rounded off to the nearest hundred as $500$.

Step 2.Find sum

$600-500=100$

Hence the difference by rounding off the number $629-485$ to the nearest hundreds is $100$