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1、 2位数加减法计算题 100道 用时： 错误： 52 33 = 68 25 = 55 16 = 33 14 = 52 35 = 80 11 = 17 18 = 44 35 = 65 37 = 25 18 = 26 37 = 36 37 = 37 56 = 28 43 = 84 46 = 40 25 = 27 24 = 33 16 = 48 35 = 15 77 = 23 17 = 28 36 = 65 17 = 41 27 = 56 17 = 36 57 = 73 47 = 15 67 = 85 48 = 56 25 = 58 38 = 25 16 = 55 17 = 25 18 = 17 6
2、7 = 27 18 = 24 17 = 37 55 = 61 58 = 52 45 = 81 26 = 65 17 = 71 14 = 34 47 = 61 16 = 20 12 = 64 36 = 60 54 = 48 37 = 63 34 = 61 17 = 52 16 = 54 25 = 84 77 = 15 18 = 48 28 = 17 38 = 24 48 = 18 58 = 16 37 = 17 55 = 38 25 = 45 17 = 81 72 = 73 66 = 85 18 = 47 26 = 25 66 = 48 44 = 63 18 = 87 18 = 20 15 = 27 68 = 46 38 = 18 74 = 45 27 = 80 32 = 54 36 = 62 34 = 54 18 = 53 18 = 31 27 = 55 48 = 61 28 = 40 17 = 48 25 = 21 14 = 53 18 = 28 57 = 50 43 = 63 17 = 18 26 = 42 28 = 65 16 = 28 44 = 35 36 = 58 24 = 84 67 = 27 38 = 51 32 =
