"...adding the two numbers to the right and left of it on the row above it..."
Doesn't make a whole lot of sense. What is the "it"?
row 1: is obviously easy. row 2: I think you are adding 0 to 1 and 1 to 0 to get 1 and 1 row 3: You are adding 0 + 1 for the first item, 1 + 1 for the second, and 1 + 0 for the third. row 4: You are adding 0 + 1 for the first number, 1 + 2 for the second...but the directions say "to the left AND right of it" which makes me think that the answer should be 4, not 3. 1 + 2 + 1. Really, you are only adding the number to the left of "it" (which still isn't clear). And actually, for the first half of the line you are adding the number to the left and for the second half of the line you are adding the number to the right.
What you want:
row 1: 0 + 1 row 2: 0 + 1, 1 + 0 row 3: 0 + 1, 1 + 1, 1 + 0 row 4: 0 + 1, 1 + 2, 2 + 1, 1 + 0 row 5: 0 + 1, 1 + 3, 3 + 3, 3 + 1, 1 + 0 row 6: 0 + 1, 1 + 4, 4 + 6, 6 + 4, 1 + 0
So I think your directions are probably confusing people.
Of course, you still probably aren't going to increase your percentages much, but you could be clearer in what the problem actually is.