小学2年级带括号混合口算1.doc

(1)(70 - 56) 2 = (2)(70 - 40) 6 = (3)(27 - 17) 5 = (4)(21 - 15) 7 = (5)(22 - 15) 4 = (6)(44 - 40) 7 = (7)(64 - 56) 2 = (8)(56 - 28) 7 = (9)(11 - 6) 3 = (10)(74 - 34) 5 = (11)(32 - 29) 6 = (12)(57 - 52) 2 = (13)(8 - 2) 3 = (14)(40 - 8) 8 = (15)(44 - 37) 1 = (16)(19 - 15) 2 = (17)(14 - 10) 6 = (18)(26 - 19) 4 = (19)(9 - 6) 8 = (20)(3 + 4) 8 = (21)(44 - 20) 8 = (22)(29 - 14) 3 = (23)(71 - 22) 7 = (24)(10 - 5) 2 = (25)(41 - 35) 6 = (26)(78 - 46) 8 = (27)(35 - 28) 4 = (28)(53 - 50) 2 = (29)(71 - 47) 3 = (30)(61 - 43) 3 = (31)(60 - 58) 1 = (32)(42 - 17) 5 = (33)(63 - 58) 6 = (34)(19 - 3) 8 = (35)(28 - 21) 5 = (36)(49 - 48) 2 = (37)(14 - 10) 1 = (38)(21 - 20) 6 = (39)(31 - 24) 5 = (40)(2 + 3) 8 = (41)(11 - 10) 4 = (42)(18 - 17) 1 = (43)(28 - 21) 5 = (44)(70 - 66) 6 = (45)(56 - 48) 2 = (46)(69 - 27) 6 = (47)(23 - 19) 2 = (48)(51 - 16) 7 = (49)(38 - 34) 7 = (50)(26 - 23) 3 = (1)(21 - 13) 8 = (2)(45 - 44) 1 = (3)(4 - 1) 1 = (4)(58 - 50) 8 = (5)(23 - 18) 5 = (6)(79 - 77) 4 = (7)(71 - 63) 3 = (8)(57 - 15) 6 = (9)(27 - 21) 3 = (10)(19 - 13) 3 = (11)(58 - 51) 1 = (12)(40 - 39) 2 = (13)(66 - 64) 2 = (14)(77 - 42) 5 = (15)(77 - 69) 6 = (16)(57 - 52) 5 = (17)(64 - 62) 1 = (18)(48 - 46) 8 = (19)(60 - 55) 6 = (20)(68 - 56) 3 = (21)(55 - 25) 5 = (22)(21 - 5) 2 = (23)(76 - 75) 5 = (24)(53 - 52) 8 = (25)(60 - 53) 3 = (26)(66 - 62) 3 = (27)(8 - 1) 8 = (28)(76 - 68) 4 = (29)(25 - 17) 1 = (30)(78 - 58) 5 = (31)(26 - 23) 8 = (32)(65 - 35) 5 = (33)(62 - 53) 3 = (34)(17 - 13) 3 = (35)(28 - 20) 2 = (36)(77 - 71) 6 = (37)(33 - 19) 2 = (38)(66 - 17) 7 = (39)(26 - 24) 1 = (40)(7 - 5) 3 = (41)(35 - 32) 1 = (42)(48 - 46) 1 = (43)(57 - 49) 7 = (44)(77 - 76) 5 = (45)(68 - 62) 4 = (