《2025年口算训练二年级数学上册北师大版双色升级版》

第57片
14 + 58 = 72 21 + 48 = 69 15 + 28 = 43
63 - 27 = 36 59 - 34 = 25 36 - 19 = 17
47 + 36 = 83 63 + 21 = 84 47 + 35 = 82
82 - 49 = 33 78 - 49 = 29 52 - 11 = 41
28 + 53 = 81 36 + 45 = 81 64 + 27 = 91
94 - 65 = 29 92 - 57 = 35 83 - 45 = 38
37 + 45 = 82 27 + 54 = 81 29 + 53 = 82
100 - 21 = 79 85 - 46 = 39 71 - 38 = 33
54 + 29 = 83 49 + 33 = 82 42 + 39 = 81
89 - 57 = 32 100 - 72 = 28 90 - 57 = 33
26 + 39 = 65 31 + 49 = 80 18 + 27 = 45
57 - 28 = 29 84 - 56 = 28 54 - 29 = 25
68 + 17 = 85 55 + 27 = 82 63 + 19 = 82
73 - 45 = 28 97 - 68 = 29 75 - 44 = 31
91 - 37 = 54 49 + 26 = 75 82 - 59 = 23

答案： 14 + 58 = 72
21 + 48 = 69
15 + 28 = 43
63 - 27 = 36
59 - 34 = 25
36 - 19 = 17
47 + 36 = 83
63 + 21 = 84
47 + 35 = 82
82 - 49 = 33
78 - 49 = 29
52 - 11 = 41
28 + 53 = 81
36 + 45 = 81
64 + 27 = 91
94 - 65 = 29
92 - 57 = 35
83 - 45 = 38
37 + 45 = 82
27 + 54 = 81
29 + 53 = 82
100 - 21 = 79
85 - 46 = 39
71 - 38 = 33
54 + 29 = 83
49 + 33 = 82
42 + 39 = 81
89 - 57 = 32
100 - 72 = 28
90 - 57 = 33
26 + 39 = 65
31 + 49 = 80
18 + 27 = 45
57 - 28 = 29
84 - 56 = 28
54 - 29 = 25
68 + 17 = 85
55 + 27 = 82
63 + 19 = 82
73 - 45 = 28
97 - 68 = 29
75 - 44 = 31
91 - 37 = 54
49 + 26 = 75
82 - 59 = 23

看一看,填一填。
(1)
有(3)个2,是2的(3)倍,一共有(6)个鸡蛋。
有(3)个7,是7的(3)倍,一共有(21)个小矮人。

答案：
(1)3，3，6
(2)3，3，21