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1、 2位数加减法计算题 100道 用时： 错误： 73 29 = 83 48 = 12 60 = 76 61 = 12 69 = 84 16 = 19 34 = 73 62 = 16 15 = 90 46 = 95 79 = 19 14 = 93 12 = 23 25 = 31 12 = 54 29 = 39 20 = 38 32 = 86 13 = 46 21 = 40 29 = 19 70 = 47 28 = 69 18 = 61 40 = 74 26 = 55 27 = 75 49 = 66 15 = 96 59 = 85 40 = 96 68 = 97 73 = 57 36 = 87 7
2、4 = 81 70 = 62 17 = 86 74 = 84 36 = 56 16 = 58 33 = 25 11 = 55 18 = 59 31 = 52 37 = 33 42 = 20 51 = 18 21 = 91 26 = 58 14 = 47 19 = 39 41 = 67 32 = 61 28 = 87 72 = 46 30 = 45 23 = 29 56 = 45 42 = 67 50 = 45 51 = 90 37 = 78 15 = 28 12 = 68 29 = 52 17 = 24 23 = 54 38 = 74 51 = 67 12 = 60 31 = 97 27 = 49 35 = 95 36 = 39 11 = 32 25 = 91 17 = 10 55 = 99 25 = 48 37 = 68 10 = 41 18 = 20 59 = 25 20 = 62 13 = 11 72 = 21 68 = 15 85 = 83 27 = 32 64 = 83 18 = 20 31 = 30 27 = 31 33 = 22 54 = 10 15 = 95 56 = 51 39 = 95 16 = 41 23 =
