50 减法 31 等于多少？
50 - 31 = 19
50减法31 等于 19
竖式演算
验算
- 用加法验算：19 + 31 = 50
相关题目
50 - 30 = 20
50 - 32 = 18
50 - 29 = 21
50 - 33 = 17
50 - 28 = 22
50 - 34 = 16
50 - 35 = 15
50 - 27 = 23
49 - 31 = 18
51 - 31 = 20
52 - 31 = 21
48 - 31 = 17
53 - 31 = 22
47 - 31 = 16
54 - 31 = 23
46 - 31 = 15
20 - 1 = 19
21 - 2 = 19
22 - 3 = 19
23 - 4 = 19
24 - 5 = 19
25 - 6 = 19
92 - 38 = 54
25 - 18 = 7
83 - 5 = 78
63 - 45 = 18
71 - 56 = 15
41 - 27 = 14
14 + 5 = 19
16 + 3 = 19