The key to success in mathematics is practise. That means learning from mistakes and becoming so familiar with numbers in differing contexts that they no longer cause fear of failure. We cannot be sure what the 21 St Century holds for the children who are in school today but we can be sure of one thing, they will have to use mathematics and be problem solvers,that is why this resource is so important. These worksheets are a vital resource for the primary school teacher and supportive parent and will give children a vital platform from which they can learn more mathematics.