2位数加减法计算题 100道 用时： 错误：
82 － 78 = 25 ＋ 66 = 44 － 15 = 53 ＋ 28 =
24 ＋ 48 = 83 － 17 = 27 ＋ 68 = 87 － 68 =
60 － 27 = 16 ＋ 37 = 83 － 65 = 52 － 13 =
72 － 47 = 84
18 ＋ 74 = 82
37 ＋ 36 = 44
38 ＋ 38 = 70
53 － 15 = 55
15 ＋ 66 = 80
48 ＋ 23 = 18
62 － 28 = 23
27 ＋ 55 = 48
80 － 38 = 40
63 ＋ 28 = 70
15 ＋ 18 = 81
42 － 15 = 71
83 － 46 = 15
45 ＋ 17 = 18
57 ＋ 37 = 61
25 ＋ 47 = 77 － 17 = 36 － 15 = 71 ＋ 18 = 51 － 58 = 56 － 48 = 17 － 61 = 24 ＋ 18 = 31 － 16 = 48 ＋ 25 = 63 － 27 = 54 － 11 = 15 － 57 = 81 － 26 = 28 ＋ 28 = 15 ＋ 36 = 36 － 13 = 55 ＋ 18 = 61 ＋ 17 = 52 － 45 = 35 － 16 = 55 ＋ 36 = 14 ＋ 56 = 76 ＋ 28 = 26 － 14 = 71 ＋ 38 = 36 － 46 = 42 － 17 = 63 ＋ 58 = 24 － 25 = 26 ＋ 67 = 28 ＋ 16 = 38 ＋ 55 = 86 ＋ 17 = 40 － 48 = 45 － 34 = ＋ 17 = ＋ 37 = ＋ 48 = － 37 = ＋ 37 = － 13 = ＋ 46 = － 17 = － 35 = ＋ 68 = ＋ 68 = ＋ 54 = ＋ 25 = － 18 = － 31 = ＋ 46 =
16 ＋ 17 = 48 ＋ 18 = 84 － 48 = 36 ＋ 48 =
82 － 27 = 51 － 45 = 58 ＋ 25 = 47 ＋ 38 =
51 － 38 = 26 ＋ 17 = 25 － 17 = 41 － 24 =
16 ＋ 66 = 47 － 18 = 51 － 42 = 85 － 66 =
34 ＋ 28 = 66
－ 37 = 34 － 15 = 18 ＋ 23 =
