This is a very specific question. Understanding division is important. Knowing when to divide is important. Knowing if your answer is correct by using estimation skills is important. But ---- why is understanding a long written method for long division useful? I know it's handy for A-level maths and polynomials. But - what about the rest of the children. Could the time spent on learning this algorithm be better spent elsewhere in maths learning the basics and reinforcing knowledge. Is spending time on getting children to have a written method for long division going to make numerate children? Will it help secondary children?