I complete a speed demon challenge in subtraction up to 20.
I got 100/100 in 2 minutes 47 seconds.
I think I can go up to 100 because I got 100/100 up to 20.
I got 100/100 in 2 minutes 47 seconds.
I think I can go up to 100 because I got 100/100 up to 20.
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