Add and subtract three-digit numbers with Springling and Minni and Subbi.

Adding 3-digit and 1-digit numbers together Explore examples and a video to show how to add up to 3-digits and 1-digit numbers.

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 ...

That "fluently add and subtract multidigit whole numbers using the standard algorithm" is exactly the borrowing and carrying digits, operating on numbers arranged in columns, that we all know and ...

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

An article teaching adding and subtracting numbers with 1 or 2 digits.

The numbers are adding up quite nicely at Westview Elementary School. Students in Nikki Carney’s second-grade class are adding and subtracting three-digit numbers with ease.

Korean children's ability to solve addition problems with sums of 10, single-digit addition problems with sums between 10 and 18, and single-digit subtraction problems with minuends between 10 and 18 ...