Exhibit 11 The Allstate Corporation and Subsidiaries Computation of Earnings Per Common Share (In millions, except for per share data) Twelve Months Ended December 31, ------------------------------------------------------- 1998 1997 1996 ---------------- --------------- --------------- Net Income $3,294 $3,105 $2,075 ================ =============== =============== Basic earnings per common share computation: Weighted average number of common shares (1) 832.2 867.9 890.8 ================ =============== =============== Net income per share - basic $3.96 $3.58 $ 2.33 ================ =============== =============== Diluted earnings per common share computation: Weighted average number of common shares (1) 832.2 867.9 890.8 Assumed exercise of dilutive stock options 4.4 4.9 5.6 ---------------- --------------- --------------- Adjusted weighted number of common shares outstanding 836.6 872.8 896.4 ================ =============== =============== Net income per share - diluted $3.94 $3.56 $2.31 ================ =============== =============== (1) Common shares held as treasury shares were 82 million, 501 million, and 17 million, at December 31, 1998, 1997 and 1996, respectively. E-6