What is rounding and why do we do it?
- Rounding a number means changing a number to a similar amount in order to make it simpler. This can make it easier to calculate with or use in everyday life.
Example 1
You might decide to round 365ml down to 350ml when measuring water for a recipe.
Example 2
This calculation might seem difficult:
5.497586986976 x 2
By rounding the long number to 5.5 the (approximate) answer feels simpler to work out:
5.5 x 2