This is a cool Maths application using which a child can learn and practice the whole number and decimal subtraction concept exactly the same way you do it on paper. A magic Robo in the application gives different capacity examples to practice. It monitors the child’s progress and paces the complexity of the problem according to the performance of the child, starting from simple whole number capacity subtraction problems to subtraction involving different units and then moves to decimal subtraction problems. In case a mistake is made (e.g.wrong borrowing), it able to pin-point the exact mistake. If the child is unable to make progress on a given problem, it walks through the detailed solution of the same problem in an animated way.The child can touch the Report Card icon to see the progress.