31 加法 69 等于多少？
31 + 69 = 100
31加法69 等于 100
竖式演算
验算
- 用减法验算：100 − 69 = 31
- 用减法验算：100 − 31 = 69
相关题目
31 + 68 = 99
31 + 70 = 101
31 + 67 = 98
31 + 71 = 102
31 + 66 = 97
31 + 72 = 103
31 + 65 = 96
31 + 73 = 104
30 + 69 = 99
32 + 69 = 101
29 + 69 = 98
33 + 69 = 102
28 + 69 = 97
34 + 69 = 103
35 + 69 = 104
27 + 69 = 96
1 + 99 = 100
2 + 98 = 100
3 + 97 = 100
4 + 96 = 100
5 + 95 = 100
6 + 94 = 100
67 + 98 = 165
53 + 78 = 131
48 + 59 = 107
43 + 97 = 140
85 + 25 = 110
75 + 65 = 140
4 × 25 = 100
100 × 1 = 100