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1、 2位数加减法计算题 100道 用时： 错误： 43 32 = 78 52 = 42 14 = 73 30 = 18 58 = 97 27 = 81 17 = 63 45 = 89 16 = 80 11 = 95 12 = 11 39 = 47 14 = 94 49 = 69 23 = 61 22 = 14 14 = 44 12 = 56 43 = 13 16 = 22 42 = 79 20 = 48 36 = 33 56 = 78 33 = 23 40 = 37 10 = 42 43 = 50 22 = 49 24 = 21 25 = 41 25 = 58 21 = 26 28 = 52 4
2、4 = 18 29 = 66 20 = 15 83 = 99 82 = 93 40 = 10 41 = 48 12 = 79 50 = 99 62 = 72 41 = 87 11 = 95 38 = 19 47 = 27 16 = 39 13 = 23 60 = 84 16 = 77 54 = 90 63 = 10 50 = 28 14 = 38 15 = 86 34 = 15 79 = 36 22 = 30 12 = 37 18 = 48 36 = 17 70 = 77 63 = 65 22 = 50 22 = 44 21 = 64 33 = 49 29 = 48 31 = 86 41 = 67 56 = 45 10 = 16 81 = 71 53 = 99 42 = 32 39 = 74 18 = 15 74 = 75 38 = 40 57 = 25 48 = 75 18 = 80 17 = 45 49 = 85 62 = 32 49 = 66 39 = 29 23 = 66 10 = 24 57 = 30 12 = 32 58 = 35 33 = 88 29 = 26 57 = 87 51 = 58 12 = 91 63 =
