EXHIBIT 11.1 MILLER EXPLORATION COMPANY COMPUTATION OF EARNINGS PER COMMON SHARE Year Ended December 31, ------------------------- 1999 1998 ----------- ------------ (In thousands, except per share data) BASIC EARNINGS (LOSS) PER SHARE Net loss............................................ $ (1,982) $ (41,800) Shares Weighted average shares outstanding............... 12,633 11,153 ----------- ------------ Basic earnings (loss) per share..................... $ (0.16) $ (3.75) =========== ============ DILUTED EARNINGS (LOSS) PER SHARE Net loss............................................ $ (1,982) $ (41,800) Shares Weighted average shares outstanding............... 12,633 11,153 ----------- ------------ Diluted earnings (loss) per share................... $ (0.16) $ (3.75) =========== ============