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1、 2位数加减法计算题 100道 用时： 错误： 92 44 = 50 21 = 49 33 = 98 72 = 69 17 = 31 15 = 90 13 = 61 16 = 52 19 = 94 28 = 65 30 = 32 32 = 43 28 = 36 45 = 67 26 = 27 34 = 67 17 = 55 19 = 51 10 = 28 13 = 46 41 = 87 38 = 93 39 = 18 67 = 93 61 = 42 22 = 44 20 = 50 22 = 55 39 = 74 27 = 18 37 = 10 59 = 36 12 = 79 39 = 61 3
2、6 = 43 31 = 65 48 = 61 15 = 80 37 = 60 38 = 80 11 = 66 28 = 75 15 = 45 43 = 36 21 = 23 70 = 73 38 = 70 15 = 95 56 = 93 69 = 23 14 = 53 16 = 99 61 = 43 40 = 92 80 = 10 50 = 44 46 = 12 45 = 57 40 = 54 42 = 28 13 = 22 16 = 18 57 = 10 56 = 60 27 = 58 20 = 30 68 = 14 22 = 82 14 = 56 43 = 52 28 = 18 58 = 81 28 = 37 10 = 59 18 = 29 70 = 72 29 = 48 44 = 66 15 = 66 19 = 17 60 = 16 71 = 63 53 = 35 23 = 52 19 = 58 29 = 42 11 = 64 42 = 15 11 = 95 46 = 28 22 = 34 49 = 48 25 = 72 50 = 83 45 = 64 51 = 50 42 = 64 18 = 40 56 = 68 14 =
