controls: to move crab use the left and right arrow keys to put the numbers on press the space bar and the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 for the other set of numbers press (b) and the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 to start the clock click on the start button and then to stop the clockpress the down arrow to clear the numbers press (c) to change the sign to a plus or a minus sign press (v) or (n) key to changethe sign to a multiplication or a division sign press the (z) or (x) key the crab will say the correct answer to get the answer press the (a) key
