Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
It seems to me that if the hundreds digit of 10r = 6, then the tenth digit also equals 6. For example, pick any number for r and multiply by 10 then you see that the tens digit becomes the hundreds digit.
56*10 = 560 (5 tens digit = 5 hundreds digit)
34*10 = 340 (3=3)