To subtract decimals: Write the larger number above the smaller number in a vertical list, lining up the decimal points. Column subtraction works from right to left.

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

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

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 ...