We’ve just launched a new tablet friendly mental maths game called Subtraction Grids which is ideal for 6 to 11 year olds. There are two playing modes where a player needs to choose either one or two missing numbers from the grid to complete the subtraction calculation. Each mode has six levels of difficulty and questions are randomised so the game can be replayed, making it great for mastery through practise and ideal for children preparing for SATs tests.
In the one number game mode the position of the missing number varies. In the two missing numbers game children are required to find two numbers given the difference between them.