Maths glossary · New Zealand
Rounding
Changing a number to a nearby, simpler number.
To round, look at the digit to the right of the place you are rounding to. If it is 5 or more, round up. If it is 4 or less, round down.
Example: 47 rounded to the nearest ten is 50. 43 rounded to the nearest ten is 40.
Lessons, worksheets, practice and tools on this: Place value.
Related words
- Place value: The value a digit has because of where it sits in a number.
- Digit: One of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 used to write numbers.
- Expanded form: A way of writing a number as the sum of the value of each digit.