Knowing our Numbers – Learning How to Estimate – Part 3

Table of Contents

Rounding off Numbers to Nearest 1000

Summary

What’s Next?

So far we learnt the method of rounding off numbers to their nearest 10s and 100s. In this segment, we will learn how to round off numbers to the nearest 1000.

How to round off numbers to nearest 1000?

To round off a number to the nearest 1000 means rounding the number to multiples of 1000, that is 1000, 2000, 3000 and so on.

In order to round off a number to its nearest 1000, we need to do the following:

Find out – in between which 2 multiples of 1000 the given number lies.

Find out – to which of the two multiples of 1000 the given number is closer to on the number line.

Based on which multiple of 1000 the number is closer to, it is rounded off to that number.

For example 3725

This number lies in the range of 3000 to 4000.

Every number from 3001 to 3499 is closer to 3000, and every number from 3501 to 3999 is closer to 4000. This means, 3725 is closer to 4000 and hence rounded off to 4000.

Rounding off numbers to the nearest 1000

For a number midway between the two multiples of 1000, it is a convention to round it off to the higher multiple of 1000.

For example, 7500 which lies exactly between 7000 and 8000 and is rounded off to 8000. (Because 8000 is a higher multiple)