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