60 加法 20 等于多少？
60 + 20 = 80
60加法20 等于 80
竖式演算
验算
- 用减法验算：80 − 20 = 60
- 用减法验算：80 − 60 = 20
相关题目
60 + 19 = 79
60 + 21 = 81
60 + 22 = 82
60 + 18 = 78
60 + 23 = 83
60 + 17 = 77
60 + 24 = 84
60 + 16 = 76
59 + 20 = 79
61 + 20 = 81
58 + 20 = 78
62 + 20 = 82
57 + 20 = 77
63 + 20 = 83
56 + 20 = 76
64 + 20 = 84
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2 + 78 = 80
3 + 77 = 80
4 + 76 = 80
5 + 75 = 80
6 + 74 = 80
21 + 71 = 92
84 + 5 = 89
30 + 44 = 74
22 + 17 = 39
58 + 100 = 158
15 + 31 = 46
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94 - 14 = 80