Students put all their addition and subtraction skills together to solve equations.

Match fun story problems with the correct addition or subtraction expression.

Addition-by-subtraction lives at the heart of Ryan's budget, particularly his health care plans. Ryan proposes to cure health care inflation by capping Medicare payments to beneficiaries at $15,000.

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 ...

Consistent with previous studies, the researchers found that the basic number-matching task activated the right parietal cortex, while the addition and subtraction tasks produced additional ...

Christoph Selter, Susanne Prediger, Marcus Nührenbörger, Stephan Hußmann, Taking away and determining the difference—a longitudinal perspective on two models of subtraction and the inverse relation to ...

Published in Science Advances on Feb. 6, a team of researchers from Australia and France have shown that bees can perform simple arithmetic, adding and subtracting small numbers by studying colour ...

From classrooms to kitchen tables, debates about math education are never far away. Should teachers drill multiplication ...