Operation | Number | % Correct |
---|---|---|
Subtract 3 | 66 | 100%
|
Multiply by ½ | 33 | 93%
|
Divide by 11 | 3 | 91%
|
Add 10 | 13 | 90%
|
Square it | 169 | 73%
|
Subtract 29 | 140 | 70%
|
Add 4 | 144 | 68%
|
Divide by 12 | 12 | 66%
|
Multiply by 7 | 84 | 58%
|
Halve it | 42 | 51%
|
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