Add a multiple of 10 or 100 to a three-digit number: step-by-step example

Adding a multiple of 10 or 100 to a three-digit number is a key skill for mental maths. It helps children see patterns in numbers and builds confidence for the 11+.

Here is a clear example to show your child how to add a multiple of 10 to a three-digit number, step by step.

Key insight: After working through this example, your child will spot how adding tens changes the number each time. This makes similar questions much easier to tackle in their head.

You can now find more practice on the same type of question, ready to help your child build speed and accuracy. For more support, search for maths.com uk resources designed for 11+ preparation.