Hello, I'm Mr Firth, and I need your help today as we learn to add and subtract within ten. You can use lots of things to help you add and subtract. Counters, number lines and even your fingers. Let's ...

When we're doing addition, our number is going to grow. It will always be bigger if we are adding to it. 5 balls in hoop 1 and 3 balls in hoop 2. Count them all up and you have a total of 8 balls. The ...

Learn how column addition can be used to make adding numbers easier. Subtracting 2-digit numbers Find out how number columns allow you to take large numbers and subtract one from another. How to add ...

Sure, here is the revised description without any links: Learn how to simplify rational identities involving addition and ...