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Subtraction, Age 7-11 is a Maths Quiz program for children aged between 7 and 11. All quizzes cover the most common Subtraction problems for children of such age group. They are system generated and can be fine-tuned to suit a child's mathematical capability. As such, it is ideal as a training tool for children.App Features:- Arithmetics quiz for subtraction. Each quiz comes in three flavours: a) 10 2 = X b) 10 X = 8 c) X 2 = 8.- "My Quiz" feature with a user-definable operand. The user can define a specific operand to focus on. E.g. Subtraction of 4.- Random Quiz feature for randomized operands.- Problem Solving: Subtraction applied to real-life situations. - Built-in Stop Watch to time the child's problem solving capability.- Five user-selectable levels of difficulty.- Performance monitoring for each difficulty level. Detailed performance statistics provided.- All quizzes are auto-generated by the iOS device and randomized so there is a virtual unlimited set of possibilities.- Universal App - works on iPhone and iPad devices.Customers, thank you for your support. If you find this app useful, please rate and give us a review!