Column addition with regrouping If the two numbers in a place value column add up to ten or more, you must regroup.

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 ...

SUBJECTS: Maths YEARS: 3–4, 5–6 Miss White teaches you how to complete formal addition problems without regrouping. She demonstrates how to set up and solve the addition questions correctly ...