20 加法 52 等于多少？
20 + 52 = 72
20加法52 等于 72
竖式演算
验算
- 用减法验算：72 − 52 = 20
- 用减法验算：72 − 20 = 52
相关题目
20 + 51 = 71
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20 + 49 = 69
20 + 55 = 75
20 + 56 = 76
20 + 48 = 68
19 + 52 = 71
21 + 52 = 73
22 + 52 = 74
18 + 52 = 70
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2 + 70 = 72
3 + 69 = 72
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13 + 25 = 38
30 + 47 = 77
66 + 1 = 67
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96 - 24 = 72