Advertisement
Advertisement
Simple to play. Just select the integer subtraction problem that has the correct answer. The minuend and subtrahend in the problems range from -9 to 9. As you answer more problems correctly, there will be more subtraction problems to choose from. Choose to play in timed or untimed mode.
Click the integer subtraction problem containing a correct answer. If playing in timed mode you'll need to select the correct problem before time runs out. To reset the saved high scores go to the instructions page via the "?" button and select "Y" on the Reset High Scores button.
Advertisement