11+ Maths: Comparing and Ordering Large Numbers (A/B)
19 October 2026
Understanding large numbers
Comparing and ordering large numbers is a key skill for the 11+ Maths exam. Children are often asked to work with numbers that go well beyond a million. This can feel daunting at first, but with a clear method, it becomes much more manageable.
Key insight: Start by checking the number of digits in each number. A number with more digits is always greater, no matter what the other digits are.
Comparing numbers step by step
Once you know the numbers have the same number of digits, compare them digit by digit, starting from the left. Look at each place value: if the first digits are the same, move to the next digit, and so on, until you find a difference.
Key insight: Encourage your child to write the numbers one under the other, lining up the digits. This makes it easier to spot differences.
Ordering lists of numbers
When asked to put several large numbers in order, group them first by the number of digits. Order numbers with the most digits first (if sorting from largest to smallest), then compare within each group using the digit-by-digit method.
Key insight: Remind your child that careful checking at each step helps avoid simple mistakes, especially when numbers look similar.
Building confidence for 11+
Practising with a range of large numbers helps children become comfortable and quick with these comparisons. Use examples from everyday life, such as population figures or distances, to make practice more engaging. This skill is foundational for many other 11+ topics.
Key insight: Calm, regular practice is more effective than rushing. Support your child by breaking down problems and celebrating small improvements.
