2位数加减法计算题 100道用时：错误： 58 － 51 ＋ 81 = 29 ＋ 33 － 34 = 31 ＋ 31 ＋ 19 = 72 － 51 ＋ 61 = 61 ＋ 17 － 41 = 58 ＋ 42 － 83 = 56 ＋ 41 － 42 = 29 ＋ 53 － 46 = 37 ＋ 41 ＋ 15 = 37 ＋ 32 ＋ 16 = 19 ＋ 77 － 90 = 78 － 37 ＋ 23 = 30 ＋ 42 － 32 = 18 ＋ 80 － 15 = 82 － 69 ＋ 63 = 86 － 72 ＋ 53 = 68 － 36 ＋ 36 = 68 － 27 ＋ 37 = 55 ＋ 23 － 22 = 17 ＋ 10 ＋ 27 = 43 ＋ 44 － 27 = 31 ＋ 19 ＋ 40 = 83 － 45 ＋ 14 = 21 ＋ 64 － 62 = 13 ＋ 16 ＋ 13 = 42 ＋ 22 － 47 = 56 － 34 ＋ 41 = 18 ＋ 28 ＋ 24 = 73 ＋ 18 － 68 = 56 － 13 ＋ 29 = 41 － 34 ＋ 60 = 14 ＋ 66 － 44 = 44 ＋ 56 － 36 = 29 ＋ 21 ＋ 41 = 98 － 52 ＋ 10 = 25 ＋ 38 ＋ 20 = 48 ＋ 15 － 46 = 51 ＋ 10 ＋ 16 = 36 ＋ 12 ＋ 51 = 46 ＋ 49 － 86 = 64 ＋ 12 ＋ 11 = 10 ＋ 29 ＋ 41 = 17 ＋ 40 ＋ 37 = 31 ＋ 49 ＋ 16 = 19 ＋ 17 ＋ 11 = 11 ＋ 18 ＋ 28 = 61 － 46 ＋ 51 = 58 ＋ 20 ＋ 12 = 64 － 42 ＋ 22 = 17 ＋ 30 ＋ 39 = 51 ＋ 10 － 16 = 18 ＋ 19 ＋ 25 = 23 ＋ 70 － 45 = 55 ＋ 25 － 42 = 48 － 35 ＋ 58 = 41 － 16 ＋ 63 = 50 － 21 ＋ 30 = 63 ＋ 33 － 23 = 50 ＋ 12 ＋ 31 = 25 ＋ 47 ＋ 19 = 22 ＋ 52 － 48 = 54 － 13 ＋ 19 = 74 － 67 ＋ 44 = 24 ＋ 29 ＋ 21 = 40 ＋ 10 ＋ 48 = 39 － 22 ＋ 61 = 56 ＋ 26 ＋ 10 = 11 ＋ 22 ＋ 11 = 22 ＋ 35 ＋ 20 = 37 ＋ 54 － 87 = 56 － 51 ＋ 45 = 45 － 32 ＋ 58 = 41 － 17 ＋ 32 = 15 ＋ 37 ＋ 37 = 54 ＋ 19 ＋ 27 = 10 ＋ 33 ＋ 25 = 22 ＋ 56 － 32 = 23 ＋ 44 ＋ 18 = 67 － 60 ＋ 31 = 55 ＋ 17 ＋ 12 = 67 － 65 ＋ 92 = 34 ＋ 22 ＋ 38 = 48 ＋ 18 ＋ 29 = 10 ＋ 13 ＋ 13 = 54 － 49 ＋ 37 = 16 ＋ 43 ＋ 21 = 78 ＋ 21 － 76 = 49 ＋ 16 － 14 = 40 ＋ 39 － 73 = 46 ＋ 41 － 56 = 17 ＋ 14 ＋ 10 = 40 ＋ 59 － 95 = 21 ＋ 44 － 18 = 53 － 51 ＋ 52 = 23 ＋ 54 ＋ 17 = 16 ＋ 34 ＋ 22 = 16 ＋ 25 ＋ 24 = 92 － 34 ＋ 42 = 18 － 11 ＋ 85 = 61 ＋ 39 － 21 =