加減乘除心算練習BasicCalculate

chenhsichang

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About this game

First game starts at the top of the page click on one of the buttons, Math, then press the button topic, and then to answer after answer to complete just press the enter key, the system will check your answers and the results are displayed in the message box below the title, and would like to As long as the topic and the topic and press the button, want to change the calculation just press the button above the Four arithmetic one can be.