48 加法 21 等于多少？
48 + 21 = 69
48加法21 等于 69
竖式演算
验算
- 用减法验算：69 − 21 = 48
- 用减法验算：69 − 48 = 21
相关题目
48 + 20 = 68
48 + 22 = 70
48 + 19 = 67
48 + 23 = 71
48 + 24 = 72
48 + 18 = 66
48 + 25 = 73
48 + 17 = 65
47 + 21 = 68
49 + 21 = 70
46 + 21 = 67
50 + 21 = 71
51 + 21 = 72
45 + 21 = 66
52 + 21 = 73
44 + 21 = 65
1 + 68 = 69
2 + 67 = 69
3 + 66 = 69
4 + 65 = 69
5 + 64 = 69
6 + 63 = 69
41 + 23 = 64
23 + 4 = 27
85 + 100 = 185
30 + 28 = 58
34 + 52 = 86
26 + 72 = 98
85 - 16 = 69
71 - 2 = 69