Students put all of their addition and subtraction skills together to solve equations.

Addition What is 4 + 5? We can put 4 things in one of the parts and 5 in the other part. By combining the two parts in the whole circle we can find the sum of 4 + 5.

This study examined Korean second and third graders' understanding of multidigit addition and subtraction and particularly their ability to explain the trading required when a column sum of the ...

Let's explore addition and subtraction This collection contains curriculum-relevant videos, quizzes and games to help Year 6 and P7 Maths students with: mental addition strategies adding and ...

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

The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...

We may see addition or subtraction as simple, but it requires different parts of our brain to store information and understand order.