Methods of Rounding Numbers
(KS2, Year 4)

Rounding Numbers (Interactive Mathematics Lesson)

Use this interactive widget to see how the different methods of rounding numbers affect your number.

• Step 1. Click on the number below to select which number to round.
• Step 2. Select the method of rounding from the list below.
(Remember that the different methods for rounding often give the same results. Therefore, your number will not always change.)

Select the method for rounding:

	Round Half Up
	Round Half Down
	Round to Floor
	Round to Ceiling
	Round Half Away from 0
	Round Half Towards 0
	Round Half to Even
	Round Half to Odd
	Round Half Randomly

This is the Round Half Up Method

Here are some simple examples of the Round Half Up method:

Examples 2.6 2.5 2.4 -2.4 -2.5 -2.6

"Round Half Up" becomes 3 becomes 3 becomes 2 becomes -2 becomes -2 becomes -3

"Round Half Down" becomes 3 becomes 2 becomes 2 becomes -2 becomes -3 becomes -3

"Round to Floor" becomes 2 becomes 2 becomes 2 becomes -3 becomes -3 becomes -3

"Round to Ceiling" becomes 3 becomes 3 becomes 3 becomes -2 becomes -2 becomes -2

"Round Half Away from 0" becomes 3 becomes 3 becomes 2 becomes -2 becomes -3 becomes -3

"Round Half Towards 0" becomes 3 becomes 2 becomes 2 becomes -2 becomes -2 becomes -3

"Round Half to Even" becomes 3 becomes 2 becomes 2 becomes -2 becomes -2 becomes -3

"Round Half to Odd" becomes 3 becomes 3 becomes 2 becomes -2 becomes -3 becomes -3

"Round Half Randomly" becomes 3 becomes 2 or 3 becomes 2 becomes -2 becomes -2 or -3 becomes -3