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1、 2位数加减法计算题 100道 用时： 错误： 45 22 = 56 53 = 35 10 = 56 41 = 13 22 = 64 35 = 42 51 = 12 83 = 33 40 = 85 11 = 40 58 = 38 30 = 53 20 = 86 25 = 12 80 = 77 11 = 15 24 = 37 12 = 14 82 = 63 20 = 87 10 = 25 42 = 48 43 = 31 28 = 82 71 = 31 32 = 71 27 = 16 42 = 18 60 = 74 70 = 30 14 = 88 31 = 37 24 = 31 20 = 17 4
2、1 = 40 57 = 88 24 = 32 57 = 11 26 = 22 57 = 35 64 = 13 15 = 37 11 = 48 35 = 76 71 = 57 52 = 71 30 = 63 20 = 62 20 = 55 40 = 38 35 = 85 20 = 57 54 = 87 41 = 85 84 = 85 21 = 46 34 = 87 10 = 21 38 = 61 27 = 62 20 = 48 40 = 68 24 = 84 15 = 31 60 = 61 30 = 45 22 = 37 21 = 46 21 = 65 53 = 47 40 = 78 24 = 25 52 = 20 11 = 86 35 = 24 33 = 56 40 = 85 33 = 10 87 = 62 33 = 38 23 = 78 37 = 11 74 = 77 10 = 25 64 = 48 40 = 46 24 = 83 82 = 10 74 = 28 26 = 23 31 = 54 22 = 86 22 = 73 51 = 74 15 = 83 21 = 52 27 = 60 25 = 86 52 = 86 54 =
