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 subtraction problems that involve regrouping.

In this KS2 Maths article you'll find out how to use mental methods when doing addition and subtraction in your head. We also have KS2 Maths videos, a quiz and lots of examples.

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