| additions | Results | % Correct |
|---|---|---|
| 1+0 | 1 | 100%
|
| 1+2 | 3 | 99%
|
| 2+8 | 10 | 98%
|
| 3+1 | 4 | 98%
|
| 1+9 | 10 | 97%
|
| 12+8 | 20 | 97%
|
| 29+1 | 30 | 97%
|
| 29+5 | 34 | 96%
|
| 23+12 | 35 | 96%
|
| 33+2 | 35 | 96%
|
| 12+23 | 35 | 96%
|
| 43+1 | 44 | 96%
|
| 45+2 | 47 | 96%
|
| 54+0 | 54 | 96%
|
| 34+21 | 55 | 94%
|
| 32+23 | 55 | 93%
|
| 23+34 | 57 | 91%
|
| 12+45 | 57 | 88%
|
| 34+23 | 57 | 88%
|
| 12+45 | 57 | 88%
|
| 29+34 | 63 | 83%
|
| 33+33 | 66 | 83%
|
| 22+44 | 66 | 82%
|
| 65+9 | 74 | 80%
|
| 23+54 | 77 | 77%
|
| 23+56 | 79 | 73%
|
| 3+76+1 | 80 | 73%
|
| 2+87 | 89 | 72%
|
| 65+16 | 81 | 71%
|
| 34+56 | 90 | 69%
|
| 48+45 | 93 | 62%
|
| 29+66 | 95 | 58%
|
| 34+65 | 99 | 52%
|
| 40+60 | 100 | 51%
|
| 98+2 | 100 | 51%
|
| 34+66 | 100 | 50%
|
| 34+65 | 99 | 50%
|
| 32+68 | 100 | 49%
|
| 45+56 | 101 | 48%
|
| 37+67 | 104 | 44%
|
| 76+32 | 108 | 40%
|
| 54+55 | 109 | 38%
|
| 45+65 | 110 | 36%
|
| 34+76 | 110 | 33%
|
| 54+66 | 120 | 28%
|
| 23+98 | 121 | 27%
|
| 76+45 | 121 | 25%
|
| 45+90 | 135 | 24%
|
| 39+98 | 137 | 20%
|
| 98+78 | 176 | 18%
|