Make ten use some numbers and four fundamental arithmetic operations.Drag any number in the check box.Click the Operation at the bottom of the screen. So change Operation.Calculation will begin the moment the two box are filled.When all the numbers consumed if the result is 10. this is correct.back button is (You can return back state).Time Attack : How fast you can solve the 10 problems.3Minite : How many solve problems in 3Minute.If you get high score you can play hard mode.Feedback is appreciated.