42 加法 87 等于多少？
42 + 87 = 129
42加法87 等于 129
竖式演算
验算
- 用减法验算：129 − 87 = 42
- 用减法验算：129 − 42 = 87
相关题目
42 + 86 = 128
42 + 88 = 130
42 + 85 = 127
42 + 89 = 131
42 + 84 = 126
42 + 90 = 132
42 + 83 = 125
42 + 91 = 133
41 + 87 = 128
43 + 87 = 130
40 + 87 = 127
44 + 87 = 131
39 + 87 = 126
45 + 87 = 132
38 + 87 = 125
46 + 87 = 133
29 + 100 = 129
30 + 99 = 129
31 + 98 = 129
32 + 97 = 129
33 + 96 = 129
34 + 95 = 129
19 + 4 = 23
95 + 82 = 177
4 + 37 = 41
8 + 15 = 23
46 + 25 = 71
28 + 7 = 35
3 × 43 = 129
43 × 3 = 129