1 1/4 + 1/12

First, find a common denominator for the two fractions:
4 and 12 can both be divided by 4, so the common denominator is 12.

Rewrite the fractions with the common denominator:
1 3/12 + 1/12

Now, add the fractions:
1 3/12 + 1/12 = 1 4/12

Finally, simplify the fraction:
1 4/12 = 1 1/3

Therefore, 1 1/4 + 1/12 = 1 1/3.