Comment by divbzero

The same applies to counting in other bases too. For instance, in 1-indexed counting grids for kids, the last column always feels out of place.

0-indexed decimal grid:

   0  1  2  3  4  5  6  7  8  9
  10 11 12 13 14 15 16 17 18 19
  20 21 22 23 24 25 26 27 28 29
  30 31 32 33 34 35 36 37 38 39
  40 41 42 43 44 45 46 47 48 49
  50 51 52 53 54 55 56 57 58 59
  60 61 62 63 64 65 66 67 68 69
  70 71 72 73 74 75 76 77 78 79
  80 81 82 83 84 85 86 87 88 89
  90 91 92 93 94 95 96 97 98 99

1-indexed decimal grid:

  1  2  3  4  5  6  7  8  9  10
 11 12 13 14 15 16 17 18 19  20
 21 22 23 24 25 26 27 28 29  30
 31 32 33 34 35 36 37 38 39  40
 41 42 43 44 45 46 47 48 49  50
 51 52 53 54 55 56 57 58 59  60
 61 62 63 64 65 66 67 68 69  70
 71 72 73 74 75 76 77 78 79  80
 81 82 83 84 85 86 87 88 89  90
 91 92 93 94 95 96 97 98 99 100