Sometimes it’s useful to have a page that tests how quickly children can respond to a set of questions – and here is one. This Year 4 maths worksheet looks at addition and subtraction of whole tens. There are 30 questions and children who have a good grasp of adding single digits should be able to transfer their skills and answer these quite quickly.
Whilst being aimed at year 4, it could also be used with older children who are unsure of mental methods of addition and subtraction.