Blast Off is a mental maths game with different levels of difficulty. It's designed to help you identify and work with two-digit numbers. The oral questions have multiple choice answers which you will have to listen to carefully.
In the first game mode you have to find a given number. In the second you are required to find the number between two given numbers. The Count On and Count Back games are designed to help you learn some of the vocabulary of addition and subtraction. Examples of the oral questions are 'Count back four from twenty-seven', 'Count on five from sixty-one', 'What is seven more than thirty-one?' and 'What is eight less than eighty-seven?'.
Click here to play:Blast Off - Mental Maths for 5 to 8 Year Olds (topmarks.co.uk)