Question

Match the pairs based on estimation of the differences by rounding to nearest hundreds.

• A. $400$
• B. $700$
• C. $300$

Answer 1

Let's take up the numbers one by one.

In $580-323$, we can round $580$ to the closest hundred which is $600$ since the tens place digit of 580 is 8 which is greater than 5.


In $323$, tens place digit i.e. 2 is less than 5 so, it is rounded down to the closest hundred, which is $300$.


So the difference based on the estimate would be $600-300=300$.

Similiarly,
In $1200-495$, 1200 will have no change and $495$ would round up to the closest hundred, which is $500$.


So the difference based on the estimate would be $1200-500=700$.

In $835-444$ we round down $835$ to the closest hundred which is $800$ and $444$ is also rounded down to the closest hundred, which is $400$.




So the difference based on the estimate would be $800-400=400$.