For each problem, subtract the second number from the first and type in the correct answer. Use the TAB and the SHIFT+TAB keys, or the mouse to move from problem to problem.
After subtracting all 20 problems, check your answers. When you think they are all correct, press the 'Grade My Quiz' button. Your quiz grade will be
shown on the top right of the page. The answers with a check mark are correct. Those with an X are incorrect. The ones with an X will have the correct answers shown.
The numbers are randomly generated from 0 to 50. You can change the range of numbers from a minimum of 0 to a maximum of 99. Press the "Set the Difficulty" button to change the largest and smallest numbers.
Look at all the problems with an X and make sure you understand how to get the correct answer. When you are ready to try it again, press the 'Give Me a New Quiz' button.
Use the + and - buttons to set the largest numbers for the problems on the subtraction quiz. The default is 50, but the numbers can be set as high as 99. If desired a minimum number can also be
set. The default minimum is 0, but it can be reset to any number from 0 to the maximum number. Press the "Press to Continue" button to set a new quiz.
Set Maximum Numbers:50▲▼Set Minimum Numbers:0▲▼