Tape Diagrams: 2-Digit Addition and Subtraction | Grade 2 Special | 2m 20s Your child continues to use tape diagrams as a visual tool to solve word problems. Now, he solves for an unknown in any ...

Match fun story problems with the correct addition or subtraction expression. Join Mrs. Gray for number talk with the Counting Buddy Junior. Then get ready to match fun story problems with the ...

Conceptual components of multiunit addition and subtraction are described. The special difficulties caused by irregularities in the English words for multiunit numbers composed of tens and ones are ...

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 ...