47 加法 31 等于多少？
47 + 31 = 78
47加法31 等于 78
竖式演算
验算
- 用减法验算：78 − 31 = 47
- 用减法验算：78 − 47 = 31
相关题目
47 + 30 = 77
47 + 32 = 79
47 + 29 = 76
47 + 33 = 80
47 + 28 = 75
47 + 34 = 81
47 + 35 = 82
47 + 27 = 74
46 + 31 = 77
48 + 31 = 79
49 + 31 = 80
45 + 31 = 76
50 + 31 = 81
44 + 31 = 75
51 + 31 = 82
43 + 31 = 74
1 + 77 = 78
2 + 76 = 78
3 + 75 = 78
4 + 74 = 78
5 + 73 = 78
6 + 72 = 78
10 + 35 = 45
92 + 5 = 97
71 + 28 = 99
50 + 4 = 54
4 + 53 = 57
41 + 55 = 96
92 - 14 = 78
3 × 26 = 78