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Simple to play. Just select the addition problem that has the correct answer. The addition problems contain two addends ranging from 0 to 9. As you answer more problems correctly, there will be more addition problems to choose from. Choose to play in timed or untimed mode.
Click the addition 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.
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