15 加法 56 等于多少？
15 + 56 = 71
15加法56 等于 71
竖式演算
验算
- 用减法验算：71 − 56 = 15
- 用减法验算：71 − 15 = 56
相关题目
15 + 55 = 70
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15 + 53 = 68
15 + 60 = 75
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14 + 56 = 70
16 + 56 = 72
13 + 56 = 69
17 + 56 = 73
12 + 56 = 68
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2 + 69 = 71
3 + 68 = 71
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