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

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 ...

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.

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 ...

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

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

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 ...

In fourth grade, students focus most on using all four operations - addition, subtraction, multiplication, and division - to solve multi-step word problems involving multi-digit numbers. Fourth ...