15 加法 90 等于多少？
15 + 90 = 105
15加法90 等于 105
竖式演算
验算
- 用减法验算：105 − 90 = 15
- 用减法验算：105 − 15 = 90
相关题目
15 + 89 = 104
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15 + 87 = 102
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14 + 90 = 104
16 + 90 = 106
13 + 90 = 103
17 + 90 = 107
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6 + 99 = 105
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48 + 27 = 75
8 + 56 = 64
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73 + 61 = 134
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7 × 15 = 105
35 × 3 = 105