39 加法 3 等于多少？
39 + 3 = 42
39加法3 等于 42
竖式演算
验算
- 用减法验算：42 − 3 = 39
- 用减法验算：42 − 39 = 3
相关题目
39 + 2 = 41
39 + 4 = 43
39 + 1 = 40
39 + 5 = 44
39 + 6 = 45
39 + 7 = 46
39 + 8 = 47
39 + 9 = 48
38 + 3 = 41
40 + 3 = 43
37 + 3 = 40
41 + 3 = 44
42 + 3 = 45
36 + 3 = 39
43 + 3 = 46
35 + 3 = 38
1 + 41 = 42
2 + 40 = 42
3 + 39 = 42
4 + 38 = 42
5 + 37 = 42
6 + 36 = 42
60 + 58 = 118
34 + 9 = 43
26 + 93 = 119
38 + 7 = 45
64 + 81 = 145
51 + 56 = 107
96 - 54 = 42
42 × 1 = 42