Comparing and Ordering Large Numbers for 11+ Maths
19 October 2026
Understanding place value
Place value is the foundation for comparing and ordering large numbers. Each digit in a number has its own value, depending on its position from left to right. For example, in 52,638, the 5 is worth fifty thousand, not just five.
Comparing large numbers
To compare two or more large numbers, always start with the digit in the highest place value (usually the leftmost digit). If these are the same, move to the next digit to the right and continue until you find a difference.
Ordering numbers in size
When asked to order a set of numbers, line them up vertically by their digits. This makes it easier to spot which has the largest or smallest value in each column. Check for numbers with more digits, as these are always larger.
Key insight: Place value mistakes are common
Many errors happen when children overlook zeros or misread the value of a digit. Encourage your child to read numbers aloud and check each digit's place value carefully. Practising with numbers in word and figure form helps build confidence.
Supporting at home
You can help by creating quick challenges: ask your child to put a list of numbers in order, or to identify which number is largest or smallest. Focus on whole numbers above zero, as these are typical in 11+ questions.
