EXHIBIT 11.1 MILLER EXPLORATION COMPANY COMPUTATION OF EARNINGS PER COMMON SHARE YEAR ENDED DECEMBER 31, 1998 ----------------------- (In thousands, except per share data) BASIC EARNINGS (LOSS) PER SHARE Net income (loss) $(41,800) Shares Weighted average shares outstanding 11,153 -------- Basic earnings (loss) per share $ (3.75) ======== DILUTED EARNINGS (LOSS) PER SHARE Net income (loss) $(41,800) Shares Weighted average shares outstanding 11,153 -------- Diluted earnings (loss) per share $ (3.75) ========