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

From classrooms to kitchen tables, debates about math education are never far away. Should teachers drill multiplication ...

Fifth-graders will continue to deepen their understanding of addition, subtraction, multiplication, and division of fractions.

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

The new theme is Addition and Subtraction, stories of humans becoming more and less and sometimes both with the help of technology.

Steps in addition and subtraction of four-digit numbers were motivated by the size of the blocks and then were carried out with the blocks; each step was immediately recorded with base-ten numerals.