Use different strategies to subtract including counting back and the connection between addition and subtraction. Use a number line to help count on to find a difference. Aired 12/07/2021 | Rating ...

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 ...

Lisa Buchholz, Learning Strategies for Addition and Subtraction Facts: The Road to Fluency and the License to Think, Teaching Children Mathematics, Vol. 10, No. 7 (MARCH 2004), pp. 362-367 ...

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 ...