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1、 2位数加减法计算题 100道 用时： 错误： 97 56 = 15 17 = 25 14 = 36 28 = 29 18 = 29 47 = 58 36 = 42 49 = 60 34 = 29 46 = 38 25 = 44 27 = 35 63 = 11 54 = 64 14 = 15 18 = 53 14 = 12 56 = 56 32 = 13 31 = 39 42 = 47 22 = 66 35 = 81 53 = 68 12 = 28 29 = 27 31 = 90 20 = 81 23 = 90 29 = 11 74 = 88 78 = 14 70 = 89 55 = 72 5
2、6 = 90 11 = 35 23 = 82 12 = 98 74 = 44 36 = 36 48 = 69 13 = 53 23 = 60 14 = 76 20 = 65 11 = 79 59 = 88 43 = 71 28 = 13 73 = 11 84 = 46 36 = 88 63 = 54 12 = 37 16 = 67 32 = 66 44 = 64 33 = 28 49 = 94 64 = 26 72 = 14 51 = 87 45 = 36 10 = 77 24 = 41 57 = 22 52 = 31 15 = 95 53 = 45 45 = 18 64 = 65 46 = 65 31 = 38 14 = 31 10 = 59 24 = 51 36 = 80 35 = 85 68 = 37 46 = 68 15 = 43 24 = 14 20 = 27 11 = 53 23 = 12 72 = 99 16 = 23 25 = 51 46 = 17 76 = 81 32 = 88 52 = 45 15 = 52 35 = 29 10 = 32 36 = 19 24 = 56 40 = 99 39 = 44 29 =
