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

Quiz: Subtracting a 1-digit number from a 3-digit number Test out your knowledge of subtracting a 1-digit number from a 3-digit number with this quiz, then read on to complete the page.

Test out your knowledge of adding 3-digit and 1-digit numbers together with this quiz, then read on to complete the page.

Draw two cards from the deck and subtract the two numbers of the cards using a number line. Remember to use the biggest number first! Download this worksheet to help you with the counting back ...

Explains the concept of zero in mathematics, emphasizing its role as a number that represents the empty set. It illustrates how zero is used in addition and subtraction, showing that adding or ...

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 ...

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 ...