Type the answer to each 3 number addition and subtraction problem. Use the arrow keys or the mouse to move from problem to problem.
Press the 'Grade My Quiz' button to have your quiz graded. A check mark means correct; an X means incorrect. The incorrect ones will have the correct answers shown.
Look at all the problems with an X and make sure you understand how to get the correct answer. Press the 'Give Me a New Quiz' button to make a new worksheet.