Addition and subtraction methods. You can add or subtract numbers in lots of different ways. You can use number lines, number bonds, fact families, 10 squares and counters, ...

In this KS2 Maths article you'll find out how to use mental methods when doing addition and subtraction in your head. We also have KS2 Maths videos, a quiz and lots of examples.

Ellis showed a subtraction problem, performed both using the traditional regrouping, or borrow-and-carry, algorithm and using an example from the common core. Here’s a screenshot of the two methods.