40 加法 84 等于多少？
40 + 84 = 124
40加法84 等于 124
竖式演算
验算
- 用减法验算：124 − 84 = 40
- 用减法验算：124 − 40 = 84
相关题目
40 + 83 = 123
40 + 85 = 125
40 + 82 = 122
40 + 86 = 126
40 + 87 = 127
40 + 81 = 121
40 + 88 = 128
40 + 80 = 120
39 + 84 = 123
41 + 84 = 125
38 + 84 = 122
42 + 84 = 126
37 + 84 = 121
43 + 84 = 127
44 + 84 = 128
36 + 84 = 120
24 + 100 = 124
25 + 99 = 124
26 + 98 = 124
27 + 97 = 124
28 + 96 = 124
29 + 95 = 124
66 + 43 = 109
6 + 87 = 93
26 + 37 = 63
90 + 23 = 113
12 + 19 = 31
71 + 74 = 145
2 × 62 = 124
62 × 2 = 124