Subtracting 1-digit from 3-digit Interactive

Answer as many questions as you can. Use the 'Enter' key or press 'Go' to submit each answer. Your time starts after you answer the first one.

Tablet Version (disables pop-up keyboard):
R C 1 2 3 4 5 6 7 8 9 0 Go
Music On: (1 min only)

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