A simple and short book to reinforce doubles to 24. Meet the two characters who are trying to find the missing number. This simple book consolidates number facts and encourages your to decide who has the correct answer. The child can work out the answer for themselves and notice any patterns as they are checking their answers. This is another simple book made for my son to help to consolidate his knowledge and understanding of simple number facts in preparation for his SATs. It also will help with your child explaining their reasoning and how they know the correct answer.