Rounding decimals practice for 11+ maths
21 October 2026
Rounding decimals in 11+ maths
Rounding decimals is a skill often tested in the 11+ maths exam. Children need to round numbers to the nearest whole, tenth, or hundredth, and must do this quickly and accurately under time pressure.
Why rounding decimals matters
Rounding helps children give sensible answers, estimate calculations, and check their work. It is especially useful in word problems and when working with money or measurements.
How to round decimals
To round a decimal, find the digit in the place you are rounding to. Look at the digit immediately to its right. If this digit is 5 or more, round up. If it is 4 or less, round down. All digits after the rounding place become zeros or are dropped, depending on the context.
Worked example
Round 3.276 to two decimal places
Identify the second decimal place: 7 is in the hundredths place.
Look at the next digit to the right: 6 is in the thousandths place.
Since 6 is more than 5, round the 7 up to 8.
The answer is 3.28.
Key insight: Accurate rounding
Careful rounding is essential for full marks in the 11+ exam. Many mistakes happen by rounding up or down incorrectly, so always check the digit to the right of the place you are rounding to.
Benefits of regular practice
Practising rounding decimals builds speed and confidence. It helps children solve questions more efficiently and makes it easier to spot errors in their calculations.
