15 乘法 42 等于多少?
15 × 42 = 630
15乘法42 等于 630
竖式演算
验算
- 用除法验算:630 ÷ 42 = 15
- 用除法验算:630 ÷ 15 = 42
相关题目
15 × 41 = 615
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