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

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