【答案】姓名____________时间____________
口算练习题
(1) 4+10+4= (11) 12+4+3= (21) 2+9+2= (31) 11-2-3= (41) 5+3+6=
(2) 2+12+3= (12) 7-3+12= (22) 8+5-8= (32) 18-15+2= (42) 7-3-2=
(3) 9-4-5= (13) 16-9+6= (23) 19-5-12= (33) 9-5-3= (43) 15-1-13=
(4) 13-8+3= (14) 6-1-2= (24) 4+1+2= (34) 10-5+4= (44) 15-5+4=
(5) 7-5+11= (15) 13-2+9= (25) 6+1-3= (35) 14-6+2= (45) 3+11+6=
(6) 1+7+2= (16) 3+5-1= (26) 3-2+19= (36) 11-3+4= (46) 3+10-3=
(7) 4+8-9= (17) 7+5+2= (27) 19-12-4= (37) 18-2-4= (47) 9+6-11=
(8) 17+2-5= (18) 16+1-5= (28) 13+4-14= (38) 9+6+4= (48) 3+13-8=
(9) 14-6+8= (19) 16-5+8= (29) 4+7+2= (39) 10-1+9= (49) 12-11+7=
(10) 18-16+6= (20) 0+5+15= (30) 8+2-1= (40) 16+2-11= (50) 6+11-10=
标准答案:
(1)18 (2)17 (3)0 (4)8 (5)13 (6)10 (7)3 (8)14 (9)16 (10)8 (11)19 (12)16 (13)13 (14)3 (15)20 (16)7 (17)14 (18)12 (19)19 (20)20 (21)13 (22)5 (23)2 (24)7 (25)4 (26)20 (27)3 (28)3 (29)13 (30)9 (31)6 (32)5 (33)1 (34)9 (35)10 (36)12 (37)12 (38)19 (39)18 (40)7 (41)14 (42)2 (43)1 (44)14 (45)20 (46)10 (47)4 (48)8 (49)8 (50)7
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