Year 1 doubling small numbers Children who are good at maths have memorised a lot of facts. There are two ways of doing this, by understanding or by rote learning. It is important in Year 1 that children begin to know the doubles of small numbers. Committing doubling facts to memory allows a child to carry out more complex calculations quickly and easily. For example, if you know that 6 + 6 = 12 then you can instantly work out that 6 + 7 = 13. An important part of learning by understanding is to show what doubling means and recognise representations of doubling. Our latest sets of worksheets use illustrations to show doubling and to calculate the doubling 1-digit numbers. The aim of this in the long term is that children can double numbers quickly and accurately as part of their mental arithmetic skills. Go to Year 1 Multiplication