15 × 15      89 × 89     394 × 101     32 × 38      51 × 59
  101 × 147    101 × 94      93 × 93     228 × 101     25 × 25
   56 × 56      94 × 96     101 × 448     83 × 87     687 × 101
   64 × 66      52 × 52     101 × 654     35 × 35      11 × 19
  101 × 206     61 × 69      89 × 101     61 × 61      34 × 36
  101 × 48      52 × 52      45 × 45     456 × 101     54 × 54
   41 × 41     101 × 41      32 × 32      83 × 101     29 × 29
   55 × 55      63 × 67     479 × 101     82 × 82     882 × 101
   14 × 16     319 × 101     73 × 77      65 × 65     101 × 859
   13 × 17     101 × 149     41 × 49      82 × 101     75 × 75
  101 × 144     71 × 79      69 × 101     22 × 22     993 × 101
   51 × 51      85 × 85     101 × 101    129 × 101     69 × 69
   31 × 39     738 × 101     21 × 29      71 × 71      77 × 101
   95 × 95     265 × 101     74 × 76      53 × 53     101 × 409
   51 × 51      98 × 101     94 × 94      42 × 42      53 × 57
  339 × 101     62 × 68     101 × 88      19 × 19     238 × 101
   43 × 47      96 × 96      21 × 21     101 × 279     81 × 89
  648 × 101     62 × 62     101 × 57      24 × 26     101 × 668
   99 × 99      23 × 27      22 × 28     515 × 101     97 × 97
   79 × 79     101 × 826    245 × 101     31 × 31      37 × 33
  101 × 218     82 × 88      39 × 39     126 × 101     91 × 99
   68 × 101     51 × 101    598 × 101     98 × 98      72 × 72
   91 × 91      54 × 56     101 × 29      57 × 57     771 × 101
   81 × 81     559 × 101     52 × 58      59 × 59      84 × 86
   46 × 44     101 × 25      12 × 18     101 × 697     92 × 92
  349 × 101     93 × 97     101 × 188     42 × 48      49 × 49
  101 × 388     58 × 58      92 × 92     101 × 78      37 × 101

How many could you do quickly and accurately?