72 加法 21 等于多少？
72 + 21 = 93
72加法21 等于 93
竖式演算
验算
- 用减法验算：93 − 21 = 72
- 用减法验算：93 − 72 = 21
相关题目
72 + 20 = 92
72 + 22 = 94
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72 + 23 = 95
72 + 24 = 96
72 + 18 = 90
72 + 25 = 97
72 + 17 = 89
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73 + 21 = 94
74 + 21 = 95
70 + 21 = 91
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69 + 21 = 90
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2 + 91 = 93
3 + 90 = 93
4 + 89 = 93
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6 + 87 = 93
11 + 31 = 42
48 + 51 = 99
56 + 23 = 79
20 + 55 = 75
12 + 1 = 13
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99 - 6 = 93