29 加法 31 等于多少？
29 + 31 = 60
29加法31 等于 60
竖式演算
验算
- 用减法验算：60 − 31 = 29
- 用减法验算：60 − 29 = 31
相关题目
29 + 30 = 59
29 + 32 = 61
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29 + 33 = 62
29 + 28 = 57
29 + 34 = 63
29 + 35 = 64
29 + 27 = 56
28 + 31 = 59
30 + 31 = 61
31 + 31 = 62
27 + 31 = 58
32 + 31 = 63
26 + 31 = 57
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2 + 58 = 60
3 + 57 = 60
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15 + 19 = 34
63 + 64 = 127
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13 + 95 = 108
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71 + 80 = 151
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65 - 5 = 60