18 加法 24 等于多少?
18 + 24 = 42
18加法24 等于 42
竖式演算
验算
- 用减法验算:42 − 24 = 18
- 用减法验算:42 − 18 = 24
相关题目
18 + 23 = 41
18 + 25 = 43
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18 + 21 = 39
18 + 27 = 45
18 + 20 = 38
18 + 28 = 46
17 + 24 = 41
19 + 24 = 43
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2 + 40 = 42
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