EXHIBIT 11.1 MILLER EXPLORATION COMPANY COMPUTATION OF EARNINGS PER COMMON SHARE THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, 1998 JUNE 30, 1998 --------------------- --------------------- (In thousands, except (In thousands, except per share data) per share data) BASIC EARNINGS (LOSS) PER SHARE Net income (loss) $ 601 $(4,979) Shares Weighted average shares outstanding 12,493 9,791 ------- ------- Basic earnings (loss) per share $ .05 $ (.51) ======= ======= DILUTED EARNINGS (LOSS) PER SHARE Net income (loss) $ 601 $(4,979) Shares Weighted average shares outstanding 12,676 9,791 ------- ------- Diluted earnings (loss) per share $ .05 $ (.51) ======= =======