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 ...

Quiz: Subtraction with up to 4-digit numbers Complete this quiz to understand how to subtract with up to four-digit numbers. Then put your knowledge to the test.

Find out about the column method to subtract more than 4-digit numbers with this Year 5 article from BBC Bitesize.

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 ...

Learn activities for second grade math to prepare for school. Teach your children 2nd grade math skills like addition and subtraction.

Students in Nikki Carney’s second-grade class are adding and subtracting three-digit numbers with ease. And not just any three-digit numbers. These involve carrying and borrowing – tasks that ...