Rounding Numbers

Learn how to round numbers quickly and accurately!

What is Rounding?

Rounding is a way of making a number simpler while keeping it close to its original value.

The Golden Rule:

0, 1, 2, 3, 4 = Round DOWN
5, 6, 7, 8, 9 = Round UP

How to Round

1. Find the digit you want to round to.

2. Look at the digit immediately to its right.

3. If it is 5 or more, round up.

4. If it is 4 or less, keep the digit the same.

5. Replace following digits with zeros (for whole-number rounding).

Examples

43 rounded to the nearest 10 = 40
47 rounded to the nearest 10 = 50
368 rounded to the nearest 100 = 400
3.146 rounded to 2 decimal places = 3.15

Rounding Calculator

Enter a number and choose how you want to round it.



Test Your Knowledge!

Round 76 to the nearest 10.


Score: 0

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