15 加法 55 等于多少？
15 + 55 = 70
15加法55 等于 70
竖式演算
验算
- 用减法验算：70 − 55 = 15
- 用减法验算：70 − 15 = 55
相关题目
15 + 56 = 71
15 + 54 = 69
15 + 57 = 72
15 + 53 = 68
15 + 58 = 73
15 + 52 = 67
15 + 59 = 74
15 + 51 = 66
14 + 55 = 69
16 + 55 = 71
13 + 55 = 68
17 + 55 = 72
12 + 55 = 67
18 + 55 = 73
11 + 55 = 66
19 + 55 = 74
1 + 69 = 70
2 + 68 = 70
3 + 67 = 70
4 + 66 = 70
5 + 65 = 70
6 + 64 = 70
19 + 1 = 20
88 + 31 = 119
92 + 31 = 123
57 + 23 = 80
72 + 54 = 126
53 + 54 = 107
87 - 17 = 70
86 - 16 = 70