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1、 2位数加减法计算题 100道 用时： 错误： 98 81 = 49 32 = 84 43 = 75 64 = 97 14 = 91 71 = 34 14 = 23 47 = 57 11 = 72 29 = 47 35 = 56 22 = 88 15 = 14 73 = 70 48 = 96 75 = 63 32 = 44 39 = 77 22 = 10 38 = 78 39 = 64 30 = 43 41 = 13 71 = 22 49 = 85 31 = 51 33 = 96 17 = 14 68 = 69 34 = 35 60 = 79 10 = 13 85 = 79 19 = 81 1
2、6 = 64 21 = 93 19 = 48 23 = 49 12 = 39 20 = 44 19 = 98 51 = 26 62 = 70 28 = 57 20 = 43 11 = 27 33 = 28 13 = 32 25 = 13 24 = 64 11 = 12 53 = 73 18 = 18 37 = 41 54 = 97 34 = 99 40 = 43 22 = 71 25 = 10 18 = 50 21 = 83 54 = 63 32 = 71 11 = 10 89 = 63 14 = 74 27 = 37 25 = 14 13 = 70 43 = 30 60 = 95 16 = 91 42 = 85 49 = 73 10 = 31 28 = 81 16 = 56 31 = 53 18 = 98 52 = 17 39 = 32 45 = 25 47 = 24 59 = 19 26 = 55 32 = 61 49 = 85 40 = 97 63 = 12 15 = 34 14 = 71 20 = 21 32 = 23 49 = 37 10 = 22 72 = 12 36 = 77 42 = 92 51 = 64 31 =
