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.

In this KS2 Maths article you'll learn about some of the different methods you can use to add and subtract. We also have KS2 Maths videos, a quiz and lots of examples.

‘Column methods of addition and subtraction, short and long multiplication and division are far simpler, far quicker, far more effective and allow children to understand properly the calculation ...

Column addition and subtraction. In the column method of addition and subtraction, numbers are written so their place values line up vertically forming columns for ones, tens, hundreds, thousands etc.

The Common Core State Standards teach students the algorithm for multi-digit addition and subtraction in 4th grade. But some experts say it should be taught sooner.

He points out that the Indian method of addition and subtraction were done by ‘Sankalana Vyavakalanabhyam’ sutra, which carries out addition and subtraction together.