TOKYO -- A team of scientists in Japan recently announced the discovery of nerve cells that strongly respond to addition and subtraction in the brains of monkeys.

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.

Under the common core, there are many ways to do subtraction—none of which involve borrowing and carrying.

Researchers from 4 projects with a problem-solving approach to teaching and learning multidigit number concepts and operations describe (a) a common framework of conceptual structures children ...