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

Cement addition and subtraction relationships To help your child build number sense, have him take several small objects (beans, pennies, etc.) and count out a specific number, starting with a ...

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.

Relating addition and subtraction and playing the game BUMP; counting down.

Dutch mathematics programs emphasize mental addition and subtraction in the lower grades. For two-digit numbers up to 100, instruction focuses on "counting by tens from any number" (N10), a strategy ...

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 ...