8 加法 40 等于多少?
8 + 40 = 48
8加法40 等于 48
竖式演算
验算
- 用减法验算:48 − 40 = 8
- 用减法验算:48 − 8 = 40
相关题目
8 + 39 = 47
8 + 41 = 49
8 + 38 = 46
8 + 42 = 50
8 + 37 = 45
8 + 43 = 51
8 + 44 = 52
8 + 36 = 44
7 + 40 = 47
9 + 40 = 49
6 + 40 = 46
10 + 40 = 50
11 + 40 = 51
5 + 40 = 45
12 + 40 = 52
4 + 40 = 44
1 + 47 = 48
2 + 46 = 48
3 + 45 = 48
4 + 44 = 48
5 + 43 = 48
6 + 42 = 48
10 + 56 = 66
71 + 2 = 73
4 + 74 = 78
10 + 69 = 79
45 + 30 = 75
11 + 31 = 42
55 - 7 = 48
99 - 51 = 48