(完整版)两位数加减两位数笔算(不进位不退位)

100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________56 - 35 = 66 - 31 = 15 + 42 = 16 + 13 = 33 - 11 = 34 - 30 = 41 + 15 = 12 + 35 = 89 - 88 = 42 - 10 = 46 + 13 = 12 + 82 = 44 + 54 = 88 - 46 = 48 - 17 = 83 - 40 = 96 - 53 = 34 + 25 = 96 - 52 = 95 - 61 = 30 + 24 = 11 + 64 = 94 - 62 = 19 + 10 = 62 + 21 = 24 + 72 = 67 - 13 = 55 - 10 = 35 + 53 = 53 + 44 = 95 - 22 = 21 + 24 = 75 - 70 = 42 + 56 = 65 + 23 = 74 - 20 = 85 - 10 = 97 - 70 = 52 - 51 = 29 - 28 = 63 + 25 = 75 - 61 = 75 + 11 = 83 - 60 = 72 + 15 = 51 + 18 = 67 - 26 = 53 + 13 = 93 - 81 = 67 - 30 = 84 - 40 = 49 - 48 = 13 + 75 = 89 - 53 = 70 + 12 = 37 + 11 = 55 + 11 = 71 + 16 = 32 + 62 = 53 + 16 = 83 - 30 = 79 + 20 = 28 - 15 = 34 + 21 = 17 - 12 = 38 - 34 = 11 + 50 = 41 + 21 = 84 - 70 = 74 + 23 = 34 - 30 = 62 + 36 = 89 - 78 = 62 - 40 = 83 - 70 = 57 - 55 = 53 + 45 = 55 + 33 = 45 + 44 = 21 + 40 = 39 - 38 = 40 + 20 = 58 - 37 = 39 + 50 = 37 + 60 = 38 + 10 = 11 + 11 = 14 + 63 = 13 + 34 = 58 - 13 = 12 + 31 = 59 - 51 = 95 - 44 = 46 + 40 = 53 + 30 = 75 - 34 = 53 + 33 = 55 + 22 = 42 + 35 = 29 - 15 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________11 + 65 = 55 - 12 = 29 - 13 = 12 + 25 =12 + 81 = 42 + 17 = 24 + 54 = 49 - 25 = 18 - 13 = 45 + 20 = 22 + 60 = 87 - 11 = 14 + 10 = 31 + 45 = 66 - 35 = 99 - 47 = 67 - 61 = 20 + 53 = 42 + 23 = 58 - 11 = 78 + 11 = 44 + 14 = 16 + 51 = 23 - 11 = 62 - 51 = 92 - 40 = 54 - 22 = 60 + 38 = 31 + 63 = 98 - 70 = 64 - 43 = 32 + 56 = 53 - 50 = 98 - 62 = 89 - 32 = 88 - 20 = 34 + 65 = 75 + 11 = 25 + 50 = 30 + 14 = 30 + 11 = 11 + 28 = 24 + 61 = 68 - 24 = 59 - 48 = 76 - 34 = 78 - 47 = 77 + 22 = 53 + 42 = 98 - 51 = 74 + 15 = 98 - 64 = 10 + 12 = 52 + 34 = 44 + 25 = 51 + 37 = 37 + 52 = 69 - 47 = 73 + 23 = 29 - 13 = 25 + 64 = 78 - 45 = 79 - 51 = 81 + 18 = 96 - 95 = 11 + 47 = 51 - 40 = 57 + 10 = 21 + 37 = 13 + 21 = 69 - 17 = 69 - 53 = 32 + 23 = 52 + 33 = 76 - 35 = 85 - 34 = 61 - 60 = 98 - 27 = 79 - 71 = 57 + 20 = 22 + 57 = 52 + 14 = 22 + 61 = 32 + 56 = 75 - 74 = 96 - 74 = 86 + 13 = 82 - 61 = 33 + 54 = 88 - 76 = 84 + 14 = 75 - 13 = 24 + 75 = 96 - 42 = 10 + 85 = 23 + 32 = 62 + 26 = 18 + 51 = 42 + 57 = 89 - 71 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________51 - 20 = 32 + 41 = 41 + 12 = 19 - 13 = 44 + 34 = 48 + 40 = 33 + 33 = 41 + 41 = 20 + 43 = 15 + 74 = 25 + 52 = 30 + 33 = 64 + 10 = 64 - 43 = 76 - 74 = 55 + 11 = 88 - 14 = 60 + 38 = 84 - 11 = 36 + 63 = 81 + 13 = 89 - 45 = 21 + 36 = 40 + 27 = 55 - 52 = 51 + 21 = 89 - 53 = 24 + 25 = 89 - 23 = 54 + 30 = 86 - 85 = 44 + 13 = 26 + 42 = 20 + 52 = 40 + 31 = 97 - 95 = 49 - 10 = 37 + 31 = 98 - 47 = 69 - 38 = 13 + 65 = 96 - 24 = 76 - 51 = 97 - 11 = 48 - 24 = 71 - 50 = 77 - 75 = 40 + 57 = 36 + 52 = 39 - 14 = 17 - 13 = 35 + 20 = 85 - 20 = 63 + 24 = 88 - 54 = 65 + 21 = 62 + 32 = 10 + 30 = 87 - 23 = 86 - 13 = 23 + 64 = 65 - 10 = 79 - 56 = 70 + 16 = 67 - 62 = 42 + 27 = 74 + 23 = 41 + 53 = 20 + 19 = 45 + 10 = 70 + 16 = 77 - 20 = 64 - 43 = 89 - 38 = 97 - 65 = 96 - 21 = 12 + 20 = 69 - 50 = 82 + 15 = 62 - 61 = 89 - 22 = 36 - 25 = 14 + 31 = 52 + 41 = 63 - 21 = 73 - 51 = 47 + 41 = 11 + 65 = 46 - 34 = 37 + 40 = 94 - 43 = 36 + 30 = 35 + 24 = 14 + 41 = 11 + 30 = 98 - 30 = 59 + 20 = 50 + 38 = 84 - 50 = 79 - 46 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________16 + 51 = 21 + 25 = 33 + 64 = 21 + 76 = 22 + 74 = 33 + 23 = 59 - 47 = 69 - 47 = 65 - 23 = 45 + 41 = 24 + 25 = 48 - 33 = 77 + 21 = 45 + 42 = 34 + 63 = 57 - 22 = 79 - 27 = 40 + 13 = 95 - 63 = 67 - 35 = 67 - 51 = 40 + 31 = 87 - 25 = 64 - 53 = 24 + 10 = 75 - 11 = 55 + 12 = 94 - 62 = 99 - 96 = 78 - 66 = 11 + 32 = 64 - 50 = 46 + 11 = 42 - 11 = 83 - 11 = 89 - 35 = 30 + 65 = 98 - 15 = 57 - 26 = 38 - 32 = 37 - 15 = 77 - 61 = 37 + 20 = 30 + 32 = 27 - 21 = 59 - 53 = 31 + 60 = 58 - 54 = 44 + 42 = 75 - 52 = 36 + 52 = 84 - 11 = 98 - 23 = 10 + 72 = 70 + 26 = 53 - 40 = 21 + 77 = 87 - 14 = 92 - 21 = 15 - 10 = 43 + 30 = 45 - 21 = 73 + 15 = 97 - 26 = 60 + 37 = 10 + 73 = 30 + 59 = 58 - 51 = 26 + 62 = 88 - 50 = 75 - 12 = 45 + 34 = 55 - 12 = 38 + 61 = 11 + 73 = 12 + 81 = 44 - 32 = 92 - 50 = 77 - 61 = 77 - 76 = 31 - 10 = 56 + 22 = 69 - 27 = 14 + 35 = 85 - 13 = 99 - 28 = 13 + 55 = 79 - 65 = 45 - 33 = 97 - 32 = 59 - 11 = 44 - 41 = 50 + 33 = 59 - 15 = 33 + 51 = 40 + 37 = 41 + 45 = 26 + 21 = 12 + 14 = 82 + 15 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________73 + 24 = 74 + 10 = 96 - 12 = 14 - 13 = 86 - 21 = 56 - 35 = 99 - 32 = 65 - 12 = 22 + 62 = 92 - 90 = 78 - 16 = 57 - 36 = 57 - 15 = 12 + 56 = 55 + 43 = 69 - 33 = 59 - 45 = 54 + 31 = 59 - 46 = 20 + 63 = 56 - 12 = 38 - 26 = 54 + 24 = 64 - 10 = 17 - 10 = 49 - 22 = 50 + 22 = 88 - 85 = 38 - 11 = 79 - 27 = 79 - 23 = 18 - 17 = 14 + 54 = 65 - 32 = 74 - 22 = 50 + 12 = 52 + 22 = 88 - 30 = 44 - 21 = 94 - 42 = 85 - 34 = 88 - 60 = 94 - 10 = 50 + 35 = 67 + 31 = 31 - 10 = 20 + 38 = 24 + 70 = 28 - 20 = 21 + 65 = 36 - 14 = 44 + 25 = 21 + 22 = 69 - 35 = 59 - 53 = 53 + 33 = 99 - 92 = 50 + 27 = 75 - 20 = 86 - 25 = 95 - 23 = 22 + 20 = 20 + 79 = 24 + 35 = 40 + 56 = 38 - 27 = 10 + 25 = 85 - 42 = 86 - 21 = 94 - 62 = 85 - 12 = 10 + 17 = 95 - 31 = 99 - 25 = 64 - 32 = 52 - 30 = 19 + 10 = 12 + 36 = 98 - 96 = 70 + 22 = 75 - 70 = 39 - 23 = 20 + 63 = 88 - 73 = 38 - 14 = 48 - 24 = 36 + 42 = 89 - 25 = 89 - 73 = 22 + 37 = 21 + 20 = 82 + 17 = 16 - 13 = 37 - 13 = 11 + 18 = 52 + 30 = 67 + 21 = 51 + 22 = 97 - 93 = 87 - 70 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________12 + 73 = 81 + 10 = 72 - 11 = 10 + 26 = 51 + 16 = 49 - 47 = 47 - 16 = 50 + 48 = 20 + 58 = 12 + 64 = 74 - 73 = 31 + 34 = 69 - 53 = 75 - 61 = 15 + 83 = 87 + 10 = 68 - 63 = 75 - 50 = 37 + 42 = 39 - 35 = 11 + 56 = 98 - 17 = 65 - 52 = 12 + 14 = 56 + 11 = 37 - 21 = 79 - 38 = 56 - 20 = 29 - 26 = 50 + 27 = 56 + 13 = 88 - 52 = 11 + 20 = 15 + 13 = 17 - 11 = 89 - 32 = 89 - 10 = 38 + 21 = 33 + 33 = 86 - 40 = 82 + 11 = 38 - 14 = 75 + 10 = 36 + 22 = 99 - 83 = 97 - 43 = 22 + 27 = 11 + 73 = 76 - 13 = 85 - 11 = 99 - 10 = 19 + 60 = 10 + 61 = 65 + 22 = 85 - 34 = 10 + 46 = 79 - 27 = 47 + 42 = 74 - 50 = 41 + 33 = 21 + 42 = 67 - 24 = 40 + 37 = 66 - 25 = 11 + 80 = 78 - 23 = 48 - 24 = 93 - 70 = 42 + 35 = 83 - 21 = 67 - 53 = 87 - 51 = 38 - 32 = 23 + 74 = 86 - 12 = 29 + 50 = 46 + 42 = 95 - 40 = 45 + 51 = 73 - 70 = 94 - 72 = 59 - 54 = 98 - 96 = 21 + 62 = 14 + 52 = 60 + 31 = 83 - 81 = 95 - 91 = 71 + 15 = 55 + 30 = 51 + 32 = 83 - 41 = 69 - 11 = 96 - 75 = 20 + 26 = 61 - 30 = 89 - 81 = 59 - 40 = 12 + 40 = 61 + 30 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________29 + 30 = 34 + 33 = 99 - 28 = 13 + 70 = 21 + 65 = 98 - 17 = 34 - 31 = 22 + 21 = 76 - 15 = 99 - 44 = 33 + 31 = 88 - 84 = 99 - 15 = 52 + 34 = 61 + 35 = 63 + 11 = 59 - 11 = 89 - 56 = 44 - 22 = 54 + 15 = 77 - 53 = 30 + 41 = 44 + 40 = 10 + 11 = 67 - 32 = 88 - 37 = 38 - 37 = 33 + 16 = 97 - 50 = 97 - 81 = 87 - 50 = 34 + 51 = 38 - 35 = 97 - 44 = 25 - 23 = 79 - 17 = 38 + 61 = 47 - 20 = 22 + 20 = 29 + 40 = 15 + 82 = 39 - 14 = 49 - 45 = 99 - 60 = 33 + 64 = 22 + 57 = 34 - 11 = 54 - 30 = 24 + 71 = 69 - 46 = 74 - 53 = 43 + 26 = 73 - 32 = 38 - 33 = 55 + 20 = 95 - 40 = 25 + 13 = 99 - 83 = 89 - 50 = 42 + 12 = 55 + 30 = 75 - 34 = 56 + 10 = 69 - 66 = 68 - 45 = 93 - 40 = 13 + 12 = 23 + 12 = 10 + 41 = 37 - 14 = 57 - 36 = 99 - 67 = 33 + 11 = 26 + 13 = 44 + 22 = 70 + 26 = 47 + 31 = 89 + 10 = 20 + 32 = 88 - 54 = 35 - 23 = 36 - 20 = 55 + 11 = 85 - 60 = 98 - 65 = 85 - 13 = 27 + 42 = 55 - 20 = 77 - 26 = 62 + 13 = 45 + 42 = 36 - 35 = 85 - 42 = 74 + 25 = 42 - 40 = 88 - 81 = 75 - 54 = 34 - 32 = 11 + 21 = 41 + 11 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________60 + 30 = 74 + 14 = 99 - 22 = 48 + 30 = 13 + 13 = 65 - 42 = 71 + 16 = 79 - 34 = 73 + 20 = 56 - 31 = 95 - 33 = 46 + 50 = 32 + 20 = 56 - 34 = 96 - 22 = 21 + 35 = 37 - 21 = 14 + 80 = 44 + 43 = 25 + 53 = 88 - 65 = 37 - 30 = 23 + 21 = 88 - 13 = 50 + 22 = 98 - 20 = 36 - 32 = 54 + 25 = 53 + 33 = 86 - 41 = 52 + 36 = 98 - 43 = 14 + 20 = 37 + 31 = 84 - 60 = 18 - 17 = 30 + 20 = 54 - 51 = 95 - 61 = 55 - 12 = 30 + 55 = 64 - 50 = 41 + 42 = 84 - 82 = 48 + 31 = 89 - 14 = 78 - 25 = 53 + 22 = 20 + 69 = 46 - 43 = 18 + 70 = 88 - 81 = 46 + 51 = 83 + 11 = 15 + 81 = 31 + 52 = 79 - 31 = 55 - 32 = 48 - 31 = 39 - 25 = 99 - 92 = 33 + 35 = 51 + 34 = 16 + 30 = 97 - 22 = 40 + 35 = 78 - 25 = 86 - 62 = 35 - 33 = 97 - 51 = 45 + 43 = 60 + 17 = 94 - 21 = 77 - 46 = 16 + 41 = 75 - 73 = 70 + 26 = 42 + 23 = 53 + 12 = 86 - 10 = 38 + 61 = 34 + 31 = 82 + 13 = 35 + 24 = 83 - 32 = 74 - 21 = 95 - 30 = 38 - 11 = 61 + 27 = 19 - 15 = 98 - 94 = 57 - 45 = 14 + 45 = 48 + 40 = 43 - 41 = 64 - 50 = 67 - 42 = 67 - 56 = 24 + 15 = 13 + 24 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________47 + 30 = 95 - 82 = 41 - 40 = 25 + 51 = 77 - 41 = 51 + 14 = 56 - 40 = 77 - 74 = 49 - 11 = 58 - 12 = 96 - 90 = 98 - 60 = 89 - 23 = 78 - 21 = 66 - 43 = 93 - 70 = 15 - 13 = 86 - 41 = 75 - 30 = 24 + 45 = 10 + 73 = 40 + 15 = 69 - 26 = 69 - 58 = 96 - 50 = 52 - 31 = 88 - 74 = 97 - 96 = 99 - 70 = 78 - 74 = 64 - 22 = 94 - 43 = 31 + 47 = 20 + 38 = 22 + 32 = 68 - 33 = 43 + 24 = 74 - 13 = 21 + 12 = 30 + 28 =29 - 17 = 42 - 41 = 14 + 80 = 20 + 66 =30 + 65 = 22 + 65 = 75 + 11 = 23 + 35 = 95 - 71 = 43 - 32 = 74 - 22 = 32 + 36 = 30 + 53 = 51 + 37 = 75 - 33 = 15 + 61 = 26 + 63 = 41 + 42 = 23 + 14 = 75 - 20 = 24 + 70 = 74 - 22 = 95 - 60 = 35 - 32 = 91 - 60 = 86 - 70 = 36 - 30 = 10 + 46 = 45 - 11 = 86 - 51 = 27 - 24 = 69 - 36 = 54 + 44 = 12 + 77 = 12 + 43 = 79 - 41 = 26 + 12 = 13 + 54 = 36 - 14 = 31 + 57 = 13 + 15 = 95 - 64 = 22 + 33 = 36 - 25 = 12 + 24 = 74 - 52 = 60 + 27 = 79 - 11 =66 - 14 = 24 + 12 = 88 - 51 = 79 - 23 =67 - 66 = 31 + 61 = 87 - 66 = 43 + 40 = 22 + 31 = 99 - 73 = 21 + 37 = 20 + 52 =100以内（两位数不进位不退位）加减班级__________ 学号__________ 姓名__________83 - 82 = 72 + 21 = 43 + 45 = 31 + 43 = 57 + 31 = 40 + 11 = 65 + 11 = 45 + 12 = 25 + 63 = 84 + 12 = 31 + 27 = 33 + 12 = 97 - 85 = 46 + 21 = 14 + 32 = 66 - 31 = 96 - 85 = 45 + 30 = 66 + 10 = 37 + 10 = 24 + 53 = 63 - 50 = 44 + 33 = 22 + 54 = 98 - 44 = 10 + 68 = 54 + 24 = 68 - 16 = 16 + 73 = 99 - 76 = 60 + 12 = 93 - 31 = 77 - 32 = 75 - 31 = 33 + 45 = 34 + 23 = 37 + 51 = 38 + 30 = 33 + 35 = 37 - 25 = 88 - 55 = 22 - 10 = 88 - 82 = 25 + 44 = 22 + 72 = 75 - 60 = 97 - 83 = 88 - 50 = 21 - 20 = 15 - 14 = 65 - 51 = 10 + 24 = 75 - 33 = 30 + 65 = 64 + 23 = 77 - 66 = 88 - 15 = 79 - 28 = 96 - 33 = 13 + 75 = 23 + 55 = 13 + 73 = 20 + 33 = 10 + 80 = 66 - 31 = 20 + 64 = 10 + 46 = 22 + 76 = 23 - 21 = 85 - 20 = 89 - 33 = 34 + 14 = 13 + 71 = 27 - 23 = 21 + 74 = 87 - 62 = 49 + 30 = 52 - 21 = 89 - 60 = 24 - 23 = 55 - 23 = 57 + 40 = 54 + 10 = 75 + 10 = 53 + 22 = 21 + 34 = 40 + 40 = 84 - 51 = 39 - 31 = 78 - 47 = 48 - 20 = 50 + 20 = 67 - 36 = 76 - 53 = 26 - 21 = 85 - 84 = 74 - 50 = 73 - 71 = 44 + 12 = 95 - 52 =。

100以内两位数(不进位不退位)加减竖式计算本文档旨在介绍一种计算效率突破的方法，以实现100以内两位数的加减竖式计算，同时避免进位和退位的情况发生。

背景在日常计算中，我们经常遇到两位数的加减运算。

传统的竖式计算中，当进位或退位时，需要进行额外的步骤，导致计算效率降低。

本方法的目标是通过简化计算过程，提高效率。

方法以下是本方法的步骤：1. 针对加法计算：- 首先，将两个两位数的加数竖式排列，个位对齐，十位对齐。

- 如果个位数之和不超过9，直接相加并得出结果。

例如，个位数为5和7，结果即为12。

- 如果个位数之和超过9，将个位数之和减去10，并将结果的十位数与十位数之和相加。

例如，个位数为8和7，结果即为15（个位数为5，十位数为1）。

- 重复上述步骤，直到所有位数都被计算完毕。

2. 针对减法计算：- 首先，将两个两位数的减数竖式排列，个位对齐，十位对齐。

- 如果被减数个位数大于减数个位数，直接相减并得出结果。

例如，被减数个位数为8，减数个位数为5，结果即为3。

- 如果被减数个位数小于减数个位数，从十位借1，将被减数个位数与10相加，并将结果的十位数与减数十位数相减。

例如，被减数个位数为2，减数个位数为7，结果即为9（被减数十位数为1，减数十位数为8）。

- 重复上述步骤，直到所有位数都被计算完毕。

实例以下是几个示例，以展示本方法的应用效果：1. 加法计算：26+ 49------752. 减法计算：78- 42------36结论通过采用本文介绍的计算方法，可以在100以内两位数的加减竖式计算中提高计算效率。

这种方法避免了进位和退位的产生，简化了计算过程，减少了错误的可能性。

建议在日常的计算中尝试使用该方法，以提高计算效率和准确性。

请注意，本文所述内容仅为建议，使用时请根据实际情况进行判断和调整。

56 - 35 = 66 - 31 = 15 + 42 = 16 + 13 = 33 - 11 = 34 - 30 = 41 + 15 = 12 + 35 = 89 - 88 = 42 - 10 = 46 + 13 = 12 + 82 = 44 + 54 = 88 - 46 = 48 - 17 = 83 - 40 = 96 - 53 = 34 + 25 = 96 - 52 = 95 - 61 = 30 + 24 = 11 + 64 = 94 - 62 = 19 + 10 = 62 + 21 = 24 + 72 = 67 - 13 = 55 - 10 = 35 + 53 = 53 + 44 = 95 - 22 = 21 + 24 = 75 - 70 = 42 + 56 = 65 + 23 = 74 - 20 = 85 - 10 = 97 - 70 = 52 - 51 = 29 - 28 = 63 + 25 = 75 - 61 = 75 + 11 = 83 - 60 = 72 + 15 = 51 + 18 = 67 - 26 = 53 + 13 = 93 - 81 = 67 - 30 = 84 - 40 = 49 - 48 = 13 + 75 = 89 - 53 = 70 + 12 = 37 + 11 = 55 + 11 = 71 + 16 = 32 + 62 = 53 + 16 = 83 - 30 = 79 + 20 = 28 - 15 = 34 + 21 = 17 - 12 = 38 - 34 = 11 + 50 = 41 + 21 = 84 - 70 = 74 + 23 = 34 - 30 = 62 + 36 = 89 - 78 = 62 - 40 = 83 - 70 = 57 - 55 = 53 + 45 = 55 + 33 = 45 + 44 = 21 + 40 = 39 - 38 = 40 + 20 = 58 - 37 = 39 + 50 = 37 + 60 = 38 + 10 = 11 + 11 = 14 + 63 = 13 + 34 = 58 - 13 = 12 + 31 = 59 - 51 = 95 - 44 = 46 + 40 = 53 + 30 = 75 - 34 = 53 + 33 = 55 + 22 = 42 + 35 = 29 - 15 =11 + 65 = 55 - 12 = 29 - 13 = 12 + 25 =12 + 81 = 42 + 17 = 24 + 54 = 49 - 25 = 18 - 13 = 45 + 20 = 22 + 60 = 87 - 11 = 14 + 10 = 31 + 45 = 66 - 35 = 99 - 47 = 67 - 61 = 20 + 53 = 42 + 23 = 58 - 11 = 78 + 11 = 44 + 14 = 16 + 51 = 23 - 11 = 62 - 51 = 92 - 40 = 54 - 22 = 60 + 38 = 31 + 63 = 98 - 70 = 64 - 43 = 32 + 56 = 53 - 50 = 98 - 62 = 89 - 32 = 88 - 20 = 34 + 65 = 75 + 11 = 25 + 50 = 30 + 14 = 30 + 11 = 11 + 28 = 24 + 61 = 68 - 24 = 59 - 48 = 76 - 34 = 78 - 47 = 77 + 22 = 53 + 42 = 98 - 51 = 74 + 15 = 98 - 64 = 10 + 12 = 52 + 34 = 44 + 25 = 51 + 37 = 37 + 52 = 69 - 47 = 73 + 23 = 29 - 13 = 25 + 64 = 78 - 45 = 79 - 51 = 81 + 18 = 96 - 95 = 11 + 47 = 51 - 40 = 57 + 10 = 21 + 37 = 13 + 21 = 69 - 17 = 69 - 53 = 32 + 23 = 52 + 33 = 76 - 35 = 85 - 34 = 61 - 60 = 98 - 27 = 79 - 71 = 57 + 20 = 22 + 57 = 52 + 14 = 22 + 61 = 32 + 56 = 75 - 74 = 96 - 74 = 86 + 13 = 82 - 61 = 33 + 54 = 88 - 76 = 84 + 14 = 75 - 13 = 24 + 75 = 96 - 42 = 10 + 85 = 23 + 32 = 62 + 26 = 18 + 51 = 42 + 57 = 89 - 71 =51 - 20 = 32 + 41 = 41 + 12 = 19 - 13 = 44 + 34 = 48 + 40 = 33 + 33 = 41 + 41 = 20 + 43 = 15 + 74 = 25 + 52 = 30 + 33 = 64 + 10 = 64 - 43 = 76 - 74 = 55 + 11 = 88 - 14 = 60 + 38 = 84 - 11 = 36 + 63 = 81 + 13 = 89 - 45 = 21 + 36 = 40 + 27 = 55 - 52 = 51 + 21 = 89 - 53 = 24 + 25 = 89 - 23 = 54 + 30 = 86 - 85 = 44 + 13 = 26 + 42 = 20 + 52 = 40 + 31 = 97 - 95 = 49 - 10 = 37 + 31 = 98 - 47 = 69 - 38 = 13 + 65 = 96 - 24 = 76 - 51 = 97 - 11 = 48 - 24 = 71 - 50 = 77 - 75 = 40 + 57 = 36 + 52 = 39 - 14 = 17 - 13 = 35 + 20 = 85 - 20 = 63 + 24 = 88 - 54 = 65 + 21 = 62 + 32 = 10 + 30 = 87 - 23 = 86 - 13 = 23 + 64 = 65 - 10 = 79 - 56 = 70 + 16 = 67 - 62 = 42 + 27 = 74 + 23 = 41 + 53 = 20 + 19 = 45 + 10 = 70 + 16 = 77 - 20 = 64 - 43 = 89 - 38 = 97 - 65 = 96 - 21 = 12 + 20 = 69 - 50 = 82 + 15 = 62 - 61 = 89 - 22 = 36 - 25 = 14 + 31 = 52 + 41 = 63 - 21 = 73 - 51 = 47 + 41 = 11 + 65 = 46 - 34 = 37 + 40 = 94 - 43 = 36 + 30 = 35 + 24 = 14 + 41 = 11 + 30 = 98 - 30 = 59 + 20 = 50 + 38 = 84 - 50 = 79 - 46 =16 + 51 = 21 + 25 = 33 + 64 = 21 + 76 = 22 + 74 = 33 + 23 = 59 - 47 = 69 - 47 = 65 - 23 = 45 + 41 = 24 + 25 = 48 - 33 = 77 + 21 = 45 + 42 = 34 + 63 = 57 - 22 = 79 - 27 = 40 + 13 = 95 - 63 = 67 - 35 = 67 - 51 = 40 + 31 = 87 - 25 = 64 - 53 = 24 + 10 = 75 - 11 = 55 + 12 = 94 - 62 = 99 - 96 = 78 - 66 = 11 + 32 = 64 - 50 = 46 + 11 = 42 - 11 = 83 - 11 = 89 - 35 = 30 + 65 = 98 - 15 = 57 - 26 = 38 - 32 = 37 - 15 = 77 - 61 = 37 + 20 = 30 + 32 = 27 - 21 = 59 - 53 = 31 + 60 = 58 - 54 = 44 + 42 = 75 - 52 = 36 + 52 = 84 - 11 = 98 - 23 = 10 + 72 = 70 + 26 = 53 - 40 = 21 + 77 = 87 - 14 = 92 - 21 = 15 - 10 = 43 + 30 = 45 - 21 = 73 + 15 = 97 - 26 = 60 + 37 = 10 + 73 = 30 + 59 = 58 - 51 = 26 + 62 = 88 - 50 = 75 - 12 = 45 + 34 = 55 - 12 = 38 + 61 = 11 + 73 = 12 + 81 = 44 - 32 = 92 - 50 = 77 - 61 = 77 - 76 = 31 - 10 = 56 + 22 = 69 - 27 = 14 + 35 = 85 - 13 = 99 - 28 = 13 + 55 = 79 - 65 = 45 - 33 = 97 - 32 = 59 - 11 = 44 - 41 = 50 + 33 = 59 - 15 = 33 + 51 = 40 + 37 = 41 + 45 = 26 + 21 = 12 + 14 = 82 + 15 =73 + 24 = 74 + 10 = 96 - 12 = 14 - 13 = 86 - 21 = 56 - 35 = 99 - 32 = 65 - 12 = 22 + 62 = 92 - 90 = 78 - 16 = 57 - 36 = 57 - 15 = 12 + 56 = 55 + 43 = 69 - 33 = 59 - 45 = 54 + 31 = 59 - 46 = 20 + 63 = 56 - 12 = 38 - 26 = 54 + 24 = 64 - 10 = 17 - 10 = 49 - 22 = 50 + 22 = 88 - 85 = 38 - 11 = 79 - 27 = 79 - 23 = 18 - 17 = 14 + 54 = 65 - 32 = 74 - 22 = 50 + 12 = 52 + 22 = 88 - 30 = 44 - 21 = 94 - 42 = 85 - 34 = 88 - 60 = 94 - 10 = 50 + 35 = 67 + 31 = 31 - 10 = 20 + 38 = 24 + 70 = 28 - 20 = 21 + 65 = 36 - 14 = 44 + 25 = 21 + 22 = 69 - 35 = 59 - 53 = 53 + 33 = 99 - 92 = 50 + 27 = 75 - 20 = 86 - 25 = 95 - 23 = 22 + 20 = 20 + 79 = 24 + 35 = 40 + 56 = 38 - 27 = 10 + 25 = 85 - 42 = 86 - 21 = 94 - 62 = 85 - 12 = 10 + 17 = 95 - 31 = 99 - 25 = 64 - 32 = 52 - 30 = 19 + 10 = 12 + 36 = 98 - 96 = 70 + 22 = 75 - 70 = 39 - 23 = 20 + 63 = 88 - 73 = 38 - 14 = 48 - 24 = 36 + 42 = 89 - 25 = 89 - 73 = 22 + 37 = 21 + 20 = 82 + 17 = 16 - 13 = 37 - 13 = 11 + 18 = 52 + 30 = 67 + 21 = 51 + 22 = 97 - 93 = 87 - 70 =12 + 73 = 81 + 10 = 72 - 11 = 10 + 26 = 51 + 16 = 49 - 47 = 47 - 16 = 50 + 48 = 20 + 58 = 12 + 64 = 74 - 73 = 31 + 34 = 69 - 53 = 75 - 61 = 15 + 83 = 87 + 10 = 68 - 63 = 75 - 50 = 37 + 42 = 39 - 35 = 11 + 56 = 98 - 17 = 65 - 52 = 12 + 14 = 56 + 11 = 37 - 21 = 79 - 38 = 56 - 20 = 29 - 26 = 50 + 27 = 56 + 13 = 88 - 52 = 11 + 20 = 15 + 13 = 17 - 11 = 89 - 32 = 89 - 10 = 38 + 21 = 33 + 33 = 86 - 40 = 82 + 11 = 38 - 14 = 75 + 10 = 36 + 22 = 99 - 83 = 97 - 43 = 22 + 27 = 11 + 73 = 76 - 13 = 85 - 11 = 99 - 10 = 19 + 60 = 10 + 61 = 65 + 22 = 85 - 34 = 10 + 46 = 79 - 27 = 47 + 42 = 74 - 50 = 41 + 33 = 21 + 42 = 67 - 24 = 40 + 37 = 66 - 25 = 11 + 80 = 78 - 23 = 48 - 24 = 93 - 70 = 42 + 35 = 83 - 21 = 67 - 53 = 87 - 51 = 38 - 32 = 23 + 74 = 86 - 12 = 29 + 50 = 46 + 42 = 95 - 40 = 45 + 51 = 73 - 70 = 94 - 72 = 59 - 54 = 98 - 96 = 21 + 62 = 14 + 52 = 60 + 31 = 83 - 81 = 95 - 91 = 71 + 15 = 55 + 30 = 51 + 32 = 83 - 41 = 69 - 11 = 96 - 75 = 20 + 26 = 61 - 30 = 89 - 81 = 59 - 40 = 12 + 40 = 61 + 30 =29 + 30 = 34 + 33 = 99 - 28 = 13 + 70 = 21 + 65 = 98 - 17 = 34 - 31 = 22 + 21 = 76 - 15 = 99 - 44 = 33 + 31 = 88 - 84 = 99 - 15 = 52 + 34 = 61 + 35 = 63 + 11 = 59 - 11 = 89 - 56 = 44 - 22 = 54 + 15 = 77 - 53 = 30 + 41 = 44 + 40 = 10 + 11 = 67 - 32 = 88 - 37 = 38 - 37 = 33 + 16 = 97 - 50 = 97 - 81 = 87 - 50 = 34 + 51 = 38 - 35 = 97 - 44 = 25 - 23 = 79 - 17 = 38 + 61 = 47 - 20 = 22 + 20 = 29 + 40 = 15 + 82 = 39 - 14 = 49 - 45 = 99 - 60 = 33 + 64 = 22 + 57 = 34 - 11 = 54 - 30 = 24 + 71 = 69 - 46 = 74 - 53 = 43 + 26 = 73 - 32 = 38 - 33 = 55 + 20 = 95 - 40 = 25 + 13 = 99 - 83 = 89 - 50 = 42 + 12 = 55 + 30 = 75 - 34 = 56 + 10 = 69 - 66 = 68 - 45 = 93 - 40 = 13 + 12 = 23 + 12 = 10 + 41 = 37 - 14 = 57 - 36 = 99 - 67 = 33 + 11 = 26 + 13 = 44 + 22 = 70 + 26 = 47 + 31 = 89 + 10 = 20 + 32 = 88 - 54 = 35 - 23 = 36 - 20 = 55 + 11 = 85 - 60 = 98 - 65 = 85 - 13 = 27 + 42 = 55 - 20 = 77 - 26 = 62 + 13 = 45 + 42 = 36 - 35 = 85 - 42 = 74 + 25 = 42 - 40 = 88 - 81 = 75 - 54 = 34 - 32 = 11 + 21 = 41 + 11 =60 + 30 = 74 + 14 = 99 - 22 = 48 + 30 = 13 + 13 = 65 - 42 = 71 + 16 = 79 - 34 = 73 + 20 = 56 - 31 = 95 - 33 = 46 + 50 = 32 + 20 = 56 - 34 = 96 - 22 = 21 + 35 = 37 - 21 = 14 + 80 = 44 + 43 = 25 + 53 = 88 - 65 = 37 - 30 = 23 + 21 = 88 - 13 = 50 + 22 = 98 - 20 = 36 - 32 = 54 + 25 = 53 + 33 = 86 - 41 = 52 + 36 = 98 - 43 = 14 + 20 = 37 + 31 = 84 - 60 = 18 - 17 = 30 + 20 = 54 - 51 = 95 - 61 = 55 - 12 = 30 + 55 = 64 - 50 = 41 + 42 = 84 - 82 = 48 + 31 = 89 - 14 = 78 - 25 = 53 + 22 = 20 + 69 = 46 - 43 = 18 + 70 = 88 - 81 = 46 + 51 = 83 + 11 = 15 + 81 = 31 + 52 = 79 - 31 = 55 - 32 = 48 - 31 = 39 - 25 = 99 - 92 = 33 + 35 = 51 + 34 = 16 + 30 = 97 - 22 = 40 + 35 = 78 - 25 = 86 - 62 = 35 - 33 = 97 - 51 = 45 + 43 = 60 + 17 = 94 - 21 = 77 - 46 = 16 + 41 = 75 - 73 = 70 + 26 = 42 + 23 = 53 + 12 = 86 - 10 = 38 + 61 = 34 + 31 = 82 + 13 = 35 + 24 = 83 - 32 = 74 - 21 = 95 - 30 = 38 - 11 = 61 + 27 = 19 - 15 = 98 - 94 = 57 - 45 = 14 + 45 = 48 + 40 = 43 - 41 = 64 - 50 = 67 - 42 = 67 - 56 = 24 + 15 = 13 + 24 =47 + 30 = 95 - 82 = 41 - 40 = 25 + 51 = 77 - 41 = 51 + 14 = 56 - 40 = 77 - 74 = 49 - 11 = 58 - 12 = 96 - 90 = 98 - 60 = 89 - 23 = 78 - 21 = 66 - 43 = 93 - 70 = 15 - 13 = 86 - 41 = 75 - 30 = 24 + 45 = 10 + 73 = 40 + 15 = 69 - 26 = 69 - 58 = 96 - 50 = 52 - 31 = 88 - 74 = 97 - 96 = 99 - 70 = 78 - 74 = 64 - 22 = 94 - 43 = 31 + 47 = 20 + 38 = 22 + 32 = 68 - 33 = 43 + 24 = 74 - 13 = 21 + 12 = 30 + 28 =29 - 17 = 42 - 41 = 14 + 80 = 20 + 66 =30 + 65 = 22 + 65 = 75 + 11 = 23 + 35 = 95 - 71 = 43 - 32 = 74 - 22 = 32 + 36 = 30 + 53 = 51 + 37 = 75 - 33 = 15 + 61 = 26 + 63 = 41 + 42 = 23 + 14 = 75 - 20 = 24 + 70 = 74 - 22 = 95 - 60 = 35 - 32 = 91 - 60 = 86 - 70 = 36 - 30 = 10 + 46 = 45 - 11 = 86 - 51 = 27 - 24 = 69 - 36 = 54 + 44 = 12 + 77 = 12 + 43 = 79 - 41 = 26 + 12 = 13 + 54 = 36 - 14 = 31 + 57 = 13 + 15 = 95 - 64 = 22 + 33 = 36 - 25 = 12 + 24 = 74 - 52 = 60 + 27 = 79 - 11 =66 - 14 = 24 + 12 = 88 - 51 = 79 - 23 =67 - 66 = 31 + 61 = 87 - 66 = 43 + 40 = 22 + 31 = 99 - 73 = 21 + 37 = 20 + 52 =83 - 82 = 72 + 21 = 43 + 45 = 31 + 43 = 57 + 31 = 40 + 11 = 65 + 11 = 45 + 12 = 25 + 63 = 84 + 12 = 31 + 27 = 33 + 12 = 97 - 85 = 46 + 21 = 14 + 32 = 66 - 31 = 96 - 85 = 45 + 30 = 66 + 10 = 37 + 10 = 24 + 53 = 63 - 50 = 44 + 33 = 22 + 54 = 98 - 44 = 10 + 68 = 54 + 24 = 68 - 16 = 16 + 73 = 99 - 76 = 60 + 12 = 93 - 31 = 77 - 32 = 75 - 31 = 33 + 45 = 34 + 23 = 37 + 51 = 38 + 30 = 33 + 35 = 37 - 25 = 88 - 55 = 22 - 10 = 88 - 82 = 25 + 44 = 22 + 72 = 75 - 60 = 97 - 83 = 88 - 50 = 21 - 20 = 15 - 14 = 65 - 51 = 10 + 24 = 75 - 33 = 30 + 65 = 64 + 23 = 77 - 66 = 88 - 15 = 79 - 28 = 96 - 33 = 13 + 75 = 23 + 55 = 13 + 73 = 20 + 33 = 10 + 80 = 66 - 31 = 20 + 64 = 10 + 46 = 22 + 76 = 23 - 21 = 85 - 20 = 89 - 33 = 34 + 14 = 13 + 71 = 27 - 23 = 21 + 74 = 87 - 62 = 49 + 30 = 52 - 21 = 89 - 60 = 24 - 23 = 55 - 23 = 57 + 40 = 54 + 10 = 75 + 10 = 53 + 22 = 21 + 34 = 40 + 40 = 84 - 51 = 39 - 31 = 78 - 47 = 48 - 20 = 50 + 20 = 67 - 36 = 76 - 53 = 26 - 21 = 85 - 84 = 74 - 50 = 73 - 71 = 44 + 12 = 95 - 52 =一年级数学应用题练习1、同学们要做10个灯笼,已做好8个，还要做多少个？2、从花上飞走了6只蝴蝶，又飞走了5只，两次飞走了多少只？3、飞机场上有15架飞机，飞走了3架，现在机场上有飞机多少架？4、小苹种7盆红花，又种了同样多的黄花，两种花共多少盆？5、学校原有5瓶胶水，又买回9瓶，现在有多少瓶？6、小强家有10个苹果，吃了7个，还有多少个？7、汽车总站有13辆汽车，开走了3辆，还有几辆？8、小朋友做剪纸，用了8张红纸，又用了同样多的黄纸，他们用了9、马场上有9匹马，又来了5匹，现在马场上有多少匹？10、商店有15把扇，卖去5把，现在有多少把？11、学校有兰花和菊花共15盆，兰花有6盆，菊花有几盆？12、小青两次画了17个，第一次画了9个，第二次画了多少个？13、小红家有苹果和梨子共13个，苹果有4个，梨子有多少个？14、学校要把12箱文具送给山区小学，已送去7箱，还要送几箱？15、家有11棵白菜，吃了5棵，还有几棵？17、从车场开走8辆汽车，还剩24辆，车场原来有多少汽车？18、从车场开走8辆大汽车，又开走同样多的小汽车，两次开走多少辆汽车？19、学校体育室有6个足球，又买来20个，现在有多少个？20、学雷锋小组上午修了8张椅，下午修了9张，一天修了多少张椅21、明明上午算了12道数学题，下午算了8道，上午比下午多算多少道题？22、图书室里有20个女同学，有10个男同学，男同学比女同学少多少个？24、学校有10个足球，16个篮球，足球比篮球少多少个？25、花园里有兰花40盆，菊花60盆，兰花再种多少盆就和菊花同样多？26、妈妈买红扣子18个，白扣子10个，黑扣子8个。

笔算两位数加、减两位数（不进位、不退位）教学内容用竖式计算两位数加、减两位数（不进位、不退位），课本第59~60页。

教学目标1、知识与技能使学生理解和掌握两位数加、减两位数（不进位、不退位）的笔算方法，能够正确地列竖式计算。

2、过程与方法经历从具体情境中抽象出代数的过程，培养学生的创新意识。

3情感态度与价值观培养学生的合作交流能力，养成良好的学习习惯。

教学准备课件教学过程一、复习铺垫，导入新课1、口算。

1+35+44+36+33+14-36+29-520+155+3065-6062-22、导入新课师：刚才我们复习了以前学过的口算加、减法。

今天，我们要利用这些旧知识来学习新内容。

课件演示课题。

二、探究新知，掌握算法1、课件出示主题图，理解题意，引出问题。

师：这道题告诉我们那些信息？要我们求什么？指名回答。

师：要求两辆车一共坐了多少人？应用什么方法？你会列出算式来吗/生说算式，课件演示：43+31=2、讨论算法。

师：43+31等于多少，你能用自己的方法算一算吗？学生独立思考后交流。

师：你是怎样算的，能说给其他小朋友听吗？生：我是用小棒算的，先把整捆的合起来，再把零散的合起来，最后把整捆和零散的合在一起。

也就是40+30=70，3+1=4，70+4=74。

（教师结合学生的说法进行课件演示）师：这是一种很棒的算法！其他同学还有不同的想法吗？生：我是用计数器算得，先在计数器上拨出43，然后再在十位上再拨上3个珠子代表30，最后在个位上再拨上1个珠子代表1，最后结果是74。

（教师根据学生的想法进行课件的演示）师：刚才同学们的算法都很好。

今天老师要和小朋友们来学习一种新的算法，列竖式计算。

教师课件示范：43+31强调：在列竖式时，一定要把个位上的数和个位上的数对齐，十位上的数和十位上的数对齐，也就是相同数位对齐。

师：现在怎么算呢？生：先算3加1。

师：3加1得4，4应该写在哪一位？为什么？师：我们先算3加1也就是先从个位算起，然后十位上的数怎么办呢？生：把十位上的数也加起来，算4加3。

《笔算两位数加、减两位数（不进位、不退位）》课题：《笔算两位数加、减两位数（不进位、不退位）》授课教师：邓馨学校名称：开阳县城关镇石头小学教学内容用竖式计算两位数加、减两位数（不进位、不退位），课本第59~60页。

教学目标1、知识与技能使学生理解和掌握两位数加、减两位数（不进位、不退位）的笔算方法，能够正确地列竖式计算。

2、过程与方法经历从具体情境中抽象出代数的过程，培养学生的创新意识。

3情感态度与价值观培养学生的合作交流能力，养成良好的学习习惯。

教学准备课件教学过程一、复习铺垫，导入新课1、口算。

1+3 5+4 4+3 6+33+1 4-3 6+2 9-520+15 5+30 65-60 62-22、导入新课师：刚才我们复习了以前学过的口算加、减法。

今天，我们要利用这些旧知识来学习新内容。

课件演示课题。

二、探究新知，掌握算法1、课件出示主题图，理解题意，引出问题。

师：这道题告诉我们那些信息？要我们求什么？指名回答。

师：要求“两辆车一共坐了多少人？”应用什么方法？你会列出算式来吗/生说算式，课件演示：43+31=2、讨论算法。

师：43+31等于多少，你能用自己的方法算一算吗？学生独立思考后交流。

师：你是怎样算的，能说给其他小朋友听吗？生：我是用小棒算的，先把整捆的合起来，再把零散的合起来，最后把整捆和零散的合在一起。

也就是40+30=70，3+1=4，70+4=74。

（教师结合学生的说法进行课件演示）师：这是一种很棒的算法！其他同学还有不同的想法吗？生：我是用计数器算得，先在计数器上拨出43，然后再在十位上再拨上3个珠子代表30，最后在个位上再拨上1个珠子代表1，最后结果是74。

（教师根据学生的想法进行课件的演示）师：刚才同学们的算法都很好。

今天老师要和小朋友们来学习一种新的算法，列竖式计算。

教师课件示范：4 3+ 3 1强调：在列竖式时，一定要把个位上的数和个位上的数对齐，十位上的数和十位上的数对齐，也就是相同数位对齐。

100以内两位数(不进位不退位)加减竖式
计算
简介
这份文档将介绍一种计算速度提升的方法，用于解决100以内两位数的加减问题。

该方法采用竖式计算，旨在简化计算过程，提高计算效率。

同时，该方法不涉及进位和退位操作，使计算过程更加简单。

算法步骤
以下是计算速度提升的具体步骤：
1. 首先，将两个两位数的加数或减数分别写在竖式计算的上方和下方。

2. 从个位数开始，逐位进行计算。

3. 对于加法，将对应位置上的数相加，得到个位数的结果，并将十位数的结果暂时记在心中。

4. 对于减法，将被减数减去减数，得到个位数的结果，并将十位数的结果暂时记在心中。

5. 继续逐位进行计算，直到所有位数都计算完毕。

6. 最终得到的结果即为计算的答案。

示例
以下是一个例子，以展示计算速度提升的过程：
58 + 37 = ?
58
+ 37
-----
首先，从个位数开始计算：
8
+ 7
----
个位数的结果为15（个位数5，十位数1记在心中）。

接下来计算十位数：
1
+5
---
十位数的结果为6。

因此，58 + 37 = 65。

结论
计算速度提升是一种简化100以内两位数加减竖式计算的方法。

通过避免进位和退位操作，该方法能够提高计算效率，并使计算过
程更加简单。

使用该方法时，只需依次逐位计算即可得到准确的答案。

希望本文对您有所帮助！。

笔算两位数加、减两位数（不进位、不退位）教学内容用竖式运算两位数加、减两位数（不进位、不退位），课本第59~60页。

教学目标1、知识与技能使学生明白得和把握两位数加、减两位数（不进位、不退位）的笔算方法，能够正确地列竖式运算。

2、过程与方法经历从具体情境中抽象出代数的过程，培养学生的创新意识。

3情感态度与价值观培养学生的合作交流能力，养成良好的学习适应。

教学预备课件教学过程一、复习铺垫，导入新课1、口算。

1+35+44+36+33+14-36+29-520+155+3065-6062-22、导入新课师：刚才我们复习了往常学过的口算加、减法。

今天，我们要利用这些旧知识来学习新内容。

课件演示课题。

二、探究新知，把握算法1、课件出示主题图，明白得题意，引出问题。

师：这道题告诉我们那些信息？要我们求什么？指名回答。

师：要求两辆车一共坐了多少人？应用什么方法？你会列出算式来吗/生说算式，课件演示：43+31=2、讨论算法。

师：43+31等于多少，你能用自己的方法算一算吗？学生独立摸索后交流。

师：你是如何样算的，能说给其他小朋友听吗？生：我是用小棒算的，先把整捆的合起来，再把零散的合起来，最后把整捆和零散的合在一起。

也确实是40+30=70，3+1=4，70+4=74。

（教师结合学生的说法进行课件演示）师：这是一种专门棒的算法！其他同学还有不同的方法吗？生：我是用计数器算得，先在计数器上拨出43，然后再在十位上再拨上3个珠子代表30，最后在个位上再拨上1个珠子代表1，最后结果是74。

（教师依照学生的方法进行课件的演示）师：刚才同学们的算法都专门好。

今天老师要和小朋友们来学习一种新的算法，列竖式运算。

教师课件示范：43+31强调：在列竖式时，一定要把个位上的数和个位上的数对齐，十位上的数和十位上的数对齐，也确实是相同数位对齐。

师：现在如何算呢？生：先算3加1。

师：3加1得4，4应该写在哪一位？什么缘故？师：我们先算3加1也确实是先从个位算起，然后十位上的数如何办呢？生：把十位上的数也加起来，算4加3。