姓名: 时间: 成绩: (20道)
(1) 18 - 1 =
(6) 2 + 11 =
(11) 18 - 2 =
(16) 14 - 7 =
(2) 13 + 1 = (7) 5 + 9 = (12) 17 - 4 = (17) 17 + 1 = (3) 18 - 13 = (8) 20 - 11 = (13) 17 - 6 = (18) 2 + 16 = (4) 19 - 18 = (9) 5 + 8 = (14) 1 + 18 = (19) 20 - 13 = (5) 8 - 1 =
(10) 9 - 1 = (15) 9 - 5 = (20) 8 + 2 =
答案:
(1)17 (2)14 (3)5 (4)1 (5)7 (6)13 (7)14 (8)9 (9)13 (10)8
(11)16 (12)13 (13)11 (14)19 (15)4 (16)7 (17)18 (18)18 (19)7 (20)10
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