Exhibit 11 CASEY'S GENERAL STORES, INC. Computation of Per Share Earnings (Dollars in Thousands, Except Share and Per Share Amounts) Three Months Ended July 31, 1999 1998 Basic earnings per share Weighted average number of shares outstanding 52,718,162 52,604,845 ---------- ---------- Net income $ 14,651 12,497 ---------- ---------- Basic earnings per common and common equivalent share $ .28 .24 --------- --------- Diluted earnings per share Weighted average number of common and common equivalent shares: Weighted average number of shares outstanding 52,718,162 52,604,845 Shares applicable to stock options 300,955 347,715 ---------- ---------- 53,019,117 52,952,560 ---------- ---------- Net Income $ 14,651 12,497 --------- ---------- Diluted earnings per common and common equivalent share $ .28 .24 --------- ---------