A very simple book to remind your child that they can work out the missing number. Meet the two children Hamza and Asiya who give you a suggested answer. You have to decide who you agree with. How do you do that? You need to work out the answer for yourself. This helps children to check their own working out and to see the error that the character Hamza or Asiya may have made. It is a very simple book made for my son to help prepare him for his SATs and consolidate his understanding of how to agree or disagree with an answer given.