16 加法 15 等于多少？
16 + 15 = 31
16加法15 等于 31
竖式演算
验算
- 用减法验算：31 − 15 = 16
- 用减法验算：31 − 16 = 15
相关题目
16 + 14 = 30
16 + 16 = 32
16 + 13 = 29
16 + 17 = 33
16 + 12 = 28
16 + 18 = 34
16 + 11 = 27
16 + 19 = 35
15 + 15 = 30
17 + 15 = 32
14 + 15 = 29
18 + 15 = 33
13 + 15 = 28
19 + 15 = 34
20 + 15 = 35
12 + 15 = 27
1 + 30 = 31
2 + 29 = 31
3 + 28 = 31
4 + 27 = 31
5 + 26 = 31
6 + 25 = 31
93 + 55 = 148
68 + 61 = 129
66 + 4 = 70
30 + 82 = 112
63 + 43 = 106
16 + 29 = 45
52 - 21 = 31
86 - 55 = 31