20 加法 4 等于多少？
20 + 4 = 24
20加法4 等于 24
竖式演算
验算
- 用减法验算：24 − 4 = 20
- 用减法验算：24 − 20 = 4
相关题目
20 + 3 = 23
20 + 5 = 25
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20 + 6 = 26
20 + 1 = 21
20 + 7 = 27
20 + 8 = 28
20 + 9 = 29
19 + 4 = 23
21 + 4 = 25
22 + 4 = 26
18 + 4 = 22
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2 + 22 = 24
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4 × 6 = 24