In giving number ranges, give two digits for the second number unless more are required for clarity: 1-9, 1-13, 1-145, 76-78, 76-99, 76-101, 101-04, 101-25, 101-256, 256-58, 1036-54. See the MLA Handbook 3.5.6 for more rules pertaining to number ranges. I will correct this mistake only once in your essay; you are responsible for correcting the rest of the page ranges in your parenthetical references or Works Cited.
As always, being consistently wrong is more forgiveable than being inconsistently right; the former practice shows that you are least thinking about stylistic consistency.
Janelle Jenstad 