Adding two or three digit numbers – with regrouping

This animation (which you can find on “Maths Tools – Adding 3-digit numbers”) might help you to understand how regrouping works.

ADDING 3-digit numbers with regrouping

This works for 2-digit numbers, 4-digit numbers and so on…

Practise using this and challenging yourself using paper too, to see if you can do as well as the computer and get them correct.

😎

Now you can also have a go at subtracting with regrouping.  Use this animation to see how it works.

SUBTRACTING 2-digit numbers with regrouping

This should feel much simpler for you now.

🙂