20 加法 23 等于多少？
20 + 23 = 43
20加法23 等于 43
竖式演算
验算
- 用减法验算：43 − 23 = 20
- 用减法验算：43 − 20 = 23
相关题目
20 + 22 = 42
20 + 24 = 44
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20 + 25 = 45
20 + 20 = 40
20 + 26 = 46
20 + 19 = 39
20 + 27 = 47
19 + 23 = 42
21 + 23 = 44
22 + 23 = 45
18 + 23 = 41
23 + 23 = 46
17 + 23 = 40
24 + 23 = 47
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2 + 41 = 43
3 + 40 = 43
4 + 39 = 43
5 + 38 = 43
6 + 37 = 43
4 + 84 = 88
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1 + 30 = 31
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49 - 6 = 43
45 - 2 = 43