87 加法 31 等于多少？
87 + 31 = 118
87加法31 等于 118
竖式演算
验算
- 用减法验算：118 − 31 = 87
- 用减法验算：118 − 87 = 31
相关题目
87 + 30 = 117
87 + 32 = 119
87 + 29 = 116
87 + 33 = 120
87 + 28 = 115
87 + 34 = 121
87 + 35 = 122
87 + 27 = 114
86 + 31 = 117
88 + 31 = 119
85 + 31 = 116
89 + 31 = 120
84 + 31 = 115
90 + 31 = 121
83 + 31 = 114
91 + 31 = 122
18 + 100 = 118
19 + 99 = 118
20 + 98 = 118
21 + 97 = 118
22 + 96 = 118
23 + 95 = 118
54 + 52 = 106
81 + 63 = 144
60 + 76 = 136
42 + 76 = 118
65 + 29 = 94
90 + 62 = 152
2 × 59 = 118
59 × 2 = 118