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