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

Calculations in standard form. Adding and subtracting numbers in standard index form, multiplying and dividing numbers in standard form.

This video addresses Common Core Grade 2 Standard Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction. 03/01/2017 | Rating NR ...

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.

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 ...

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 ...