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1、 2位数加减法计算题 100道 用时： 错误： 16 47 = 53 38 = 82 63 = 70 21 = 72 44 = 77 15 = 77 18 = 40 37 = 54 27 = 70 38 = 83 77 = 58 35 = 15 16 = 38 35 = 80 63 = 33 58 = 48 48 = 47 16 = 62 54 = 35 26 = 18 55 = 57 48 = 75 56 = 26 65 = 30 18 = 17 66 = 18 67 = 14 28 = 37 16 = 81 54 = 56 27 = 18 64 = 71 38 = 74 65 = 61 2
2、3 = 37 17 = 54 27 = 52 38 = 62 38 = 60 17 = 73 56 = 64 58 = 85 16 = 70 42 = 17 46 = 62 18 = 70 22 = 48 28 = 56 26 = 61 16 = 50 46 = 63 36 = 85 37 = 80 28 = 30 26 = 78 17 = 73 36 = 24 38 = 85 76 = 28 64 = 38 15 = 57 28 = 40 34 = 80 22 = 26 26 = 31 17 = 18 47 = 16 27 = 66 57 = 48 15 = 82 65 = 41 36 = 82 55 = 28 55 = 27 45 = 18 34 = 26 27 = 27 46 = 63 18 = 21 17 = 47 28 = 78 14 = 56 38 = 33 38 = 26 58 = 84 67 = 16 57 = 83 37 = 18 18 = 76 38 = 68 26 = 38 46 = 52 34 = 15 56 = 60 28 = 36 38 = 53 48 = 18 15 = 52 36 = 74 25 =
