两位数减两位数不退位口算测试
(完整版)100以内两位数不进位不退位加减运算100题
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。
两位数减两位数口算
25+36 = 54+19 =
34+40 =
67+8=
47+12 = 60+21 =
67+23 =
12+67 =
65+17 = 48+36 =
56+29 =
69+8=
43+29 = 75-23=
16+57 =
47+38 =
你能提出什么减法问题？
想一想，这两题在计算时有什么相同，有什么 不同？
算一算班级图书角每种书还剩多少本？
故事书
连环画
儿童画报
原有（本）
72
34
50
借出（本）
48
12
36
还剩（本）
24
22
1
故事书： 72-48=_2_4___（本 ） 4
连环画：34-12=_2__2__（本 ）
儿童画报：50-36=1_4____（本 ）
5只猴子一共采了64个桃，用一个大篮装 了28个，剩下的用3个小篮装，平均每个小 篮子里有多少个桃？
算一算
小红参加数学比赛，和参加比赛的每个人 握一次手。小红一共握了39次手。求一共有多 少人参加数学比赛？
40 人
练习
1.丁丁每天看13页，第8天应从第几页看起？
2.甲乙两筐桃子，从甲筐拿出16千克放进乙 筐，这时甲乙两筐一样重，原来甲筐比乙筐 多多少千克？
两个算式都 是两位数减 两位数。
第一个算式是不退 位减，第二个算式 是退位减。
计算下列各题：
48-5=43 52-7=45 80- 76 61- 55
48- 33 52- 25 48=0- 4 661=- 155
一班口算测试分析
一年级一班口算测试分析
一、口算试题分析
本次测试了30道口算题，时间20分钟，其中包括整十数加减整十数，两位数加两位数进位、不进位，两位数减两位数退位、不退位，竖式。
二、考试情况
三、错题原因分析
个别学生还存在口算速度较慢的情况，对于这样的口算时间应该是足够的；进位加法和退位减法出错居多，仍然多数学生喜欢用数手指头的方法，导致又慢又容易出错。
相当多的一部分学生因为粗心，把运算符号看错，导致最后的结果出错；还有部分同学只写了竖式没有在横式上写出结果。
通过这次口算比赛，学生能找到出错的原因，能及时、认真的认识到错误，并表示在以后的学习中认真练习口算，争取算得又对又快。
同时，通过这次口算比赛，我也认识到了口算教学中的不足，改进练习的力度和练习的方法将在以后的数学教学中值得总结和反思，争取把学生的口算水平提高到一个新的台阶。
四、针对以上情况，准备采取以下措施：
1.讲清算理，培养学生的口算能力。
口算方法都是从实际的运算中总结出来的，要想速度和正确并进，就要掌握好口算方法，懂得算理和思路。
2.抓好专项训练，提高学生的口算能力。
认真坚持每节新授课前的5分钟的口算基本训练，要求学生正确选择算法，在短时间内正确计算出结果。
3.采用多种形式，激发学生的积极性。
运用视算、听算、开火车算、接
龙算、抢算、齐算、小组算等等，常常换换形式和角度，激发学生的口算热情；还可以在班级或小组内评选口算大王，发给一定的奖品，经常采用口头表扬的方式等等，促进学生的比、赶、超。
相信在我们全体师生的共同努力下，我们的口算形式会有新的创新和举措，我们的口算能力会提高到一个新的台阶。
小学数学北京版一年级下册第四单元 加法和减法(二)两位数减两位数(不退位)-章节测试习题
章节测试题1.【答题】根据给出的算式，在方框里填上正确的数.【答案】2 8【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据加、减之间的关系，先看个位，被减数是6，差是4，所以减数是6－4＝2，因此个位上□里的数是2；再看十位，减数是7，差是1，所以被减数是7＋1＝8，因此十位上□里的数是8.2.【答题】根据给出的算式，在方框里填上正确的数.【答案】8 1【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据加、减之间的关系，先看个位，减数是3，差是5，所以被减数是3＋5＝8，因此个位上□里的数是8；再看十位，被减数是5，差是4，所以减数是5－4＝1，因此十位上□里的数是1.3.【答题】根据给出的算式，在方框里填上正确的数.【答案】3 7【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据加、减之间的关系，先看个位，被减数是8，减数是5，所以差是8－5＝3，因此个位上的□代表的数是3；再看十位，减数是6，差是1，所以被减数是6＋1＝7，因此十位上的□代表的数是7.4.【答题】根据给出的算式，在方框里填上正确的数.【答案】5 3【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据加、减之间的关系，先看个位，被减数是6，减数是1，所以差是6－1＝5，因此个位上□里的数是5；再看十位，被减数是7，差是4，所以减数是7－4＝3，因此十位上□里的数是3.5.【答题】看图解答.65＋______＝______65－______＝______【答案】65＋13＝78（元） 65－44＝21（元）【分析】此题考查的是两位数加减两位数.【解答】第一幅图中，一个书包65元，一个铅笔盒13元，求一共有多少元，用加法计算，65＋13＝78（元）；第二幅图中，一共有65元，一件上衣44元，求裙子多少元，用减法计算，65－44＝21（元）.故此题的答案是13、78、44、21.6.【答题】得数大于40的算式是（）.A.82－31B.21＋18C.59－27【答案】A【分析】此题考查的是两位数的不进位加法和不退位减法.【解答】根据题意可得：82－31＝51，21＋18＝39，59－27＝32.因为32＜39＜40＜51，所以得数大于40的算式是82－31.选A.7.【答题】一个数加上23等于45，这个数是（）.A.68B.62C.22【答案】C【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据题意列式可得45－23＝22.选C.8.【答题】在45，65，75三个两位数中，______和______相差最大，差是______.【答案】45和75相差最大，差是30.【分析】此题考查的是两位数减两位数的不退位减法.要求哪两个数的差最大，就要挑选最大的数和最小的数来计算.【解答】75－45＝30，所以45和75相差最大，差是30.9.【答题】小强和乐乐两人做练习题，小强要做48道题，乐乐要做39道题，（）做的题多，多（）道.A.小强，2B.小强，11C.乐乐，2D.乐乐，11【答案】B【分析】此题考查的是两位数减两位数的不退位减法应用题.【解答】根据题意，要求谁做的题多，多几道，就要知道小强和乐乐各做了多少道练习题，再相减即可.根据题意，小强要做43道题，还有13道题就做完了，所以小强做了48－13＝35（道）；乐乐要做39道题，还剩15道题没做，所以乐乐做了39－15＝24（道）；因为35＞24，所以小强做的题多，多35－24＝11（道）.选B.10.【答题】学校办公室里有35盒粉笔，还剩多少盒？列式计算.______ ______ ______＝______（盒）【答案】35－24＝11（盒）【分析】此题考查的是两位数减两位数的不退位减法应用题.【解答】根据题意，学校办公室里有35盒粉笔，老师领走24盒，求还剩多少盒，就是从总数里去掉一部分，求另一部分，用减法计算，列式是35－24＝11（盒）.故此题的答案是35、－、24、11.11.【答题】列式计算小军的围巾多少元？______ ______ ______＝______（元）【答案】69 - 18 51【分析】此题考查的是两位数减两位数的不退位减法应用题.【解答】根据题意，小强买的这双鞋69元，小军的围巾比它少18元，要求小军的围巾多少元，应用减法计算，列式是69－18＝51（元）.故此题的答案是69、－、18、51.12.【答题】北京国家游泳中心水立方高30米，国家体育场鸟巢高69米，（）高，高（）米.A.水立方高，39B.鸟巢高，39C.水立方高，99D.鸟巢高，99【答案】B【分析】此题考查的是两位数减两位数的不退位减法应用题.【解答】根据题意，鸟巢高，高69－30＝39（米），选B.13.【答题】最大的两位数是______，最小的两位数是______，它们相差______.【答案】99 10 89【分析】此题考查的是100以内数的认识和两位数减两位数的不退位减法.【解答】最大的两位数是99，最小的两位数是10，他们相差99－10＝89.故此题的答案是99、10、89.14.【答题】填一填.59－35＝______ 59－36＝______59－37＝______ 59－38＝______【答案】24 23 22 21【分析】此题考查的是两位数减两位数的不退位减法.【解答】59－35＝24，59－36＝23，59－37＝22，59－38＝21.15.【答题】填写下列各空.87－37＝______ 87－15＝______ 87－26＝______【答案】50 72 61【分析】此题考查的是两位数减两位数的不退位减法.【解答】87－37＝50，87－15＝72，87－26＝61.16.【答题】61与32的和是______，63与23的差是______.【答案】93 40【分析】此题考查的是两位数的不进位加法和不退位减法.【解答】求61与32的和是多少，用加法计算，列式是61＋32＝93；求63与23的差是多少，用减法计算，列式是63－23＝40.17.【答题】45－25＝______【答案】20【分析】此题考查的是两位数减两位数的不退位减法.【解答】45－25＝20.18.【答题】36减去15等于______.【答案】21【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据题意列式是36－15＝21.故此题的答案是21.19.【答题】商店卖化肥，上午卖出46袋，下午卖出59袋，上午比下午少卖出（）件.A.59＋46B.59－46C.59－46＋59【答案】B【分析】此题考查的是两位数减两位数的减法.【解答】根据题意，上午卖出46袋，下午卖出59袋，求上午比下午少卖出多少件，就是求一个数比另一个数少多少，用减法计算，列式是59－46＝13（件）.选B.20.【答题】比73小21的数是（）.A.52B.54C.94【答案】A【分析】此题考查的是两位数减两位数的不退位减法.【解答】根据题意列式是73－21＝52.选A.。
人教版数学二年级上-2.2.1 两位数减两位数(不退位)笔算
第二单元 100以内的加法和减法 （二）
第5课时 两位数减两位数（不退位）笔算
情境导入
2008年，奥运会在北 京举行，你知道在这 届奥运会上，金牌榜 排在前五的是哪些国 家吗？我国在第几位？
情境导入
这就是2008年奥 运会金牌榜前五 名的国家，我国 排在第一位。
根据右面的信息 你能提出什么数 学问题？
课堂练习 1
十 个 45 − 3 = 42
45 −( 3)
( 4 2)
十 个 64 − 42 = 22 ( 6 4)
−( 4 2)
( 2 2)
选自教材第18页做一做第1题
课堂练习 2
48 − 18 = 30 48
− 18
( 3 0) 个想位：上个得位0上，得直几接？在 得数的怎个样位写上？写0。
十个 48 － 36 ＝ 12
个位：从8 个一划去 6 个一还剩 2 个一； 十位：从3 个十划去 2 个十还剩 1 个十； 剩1个十和2个一，合起来是 1 2 。
探究48－36的计算方法
3 用竖式计算。 48 － 36 ＝ 12
48
48
48
-36
列- 3竖6式计算应注意- 3什6么？
2
12
相同数位 要对齐。
25 − 21 = 4 25
− 21
( 4) 想十：位十上位得上0得，几？
不用怎写样。写？
选自教材第18页做一做第2题
1.列竖式计算。 32-12= 20
变式训练
47-3= 44
32
47
- 12
-3
20
44
89-88= 1
89 -8 8
1
变式训练