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扬帆起航 松柏小学2010级8班

 
 
 

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口算(1)  

2012-07-12 10:08:34|  分类: 数学园地 |  标签: |举报 |字号 订阅

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3 × 4 = 7 × (  ) = 42 8 × 8 =   7 × (  ) = 42
2 × 9 = (  ) × 6 = 48 3 × 9 =   8 × 5 =  
4 × 6 = 3 × (  ) = 3 (  ) × 5 = 40 (  ) × 2 = 8
9 × 2 = 4 × (  ) = 12 (  ) × 8 = 48 (  ) × 8 = 64
6 × 9 = 8 × (  ) = 16 6 × 8 =   9 × 4 =  
9 × 2 = (  ) × 9 = 81 (  ) × 6 = 42 7 × 2 =  
7 × 2 = (  ) × 3 = 27 3 × (  ) = 27 6 × (  ) = 36
8 × 9 = (  ) × 6 = 12 8 × 8 =   (  ) × 4 = 32
4 × 9 = 1 × (  ) = 6 5 × (  ) = 35 (  ) × 4 = 24
3 × 2 = 2 × (  ) = 18 6 × 6 =   2 × 6 =  
4 × 5 = 2 × (  ) = 18 2 × 8 =   9 × 2 =  
3 × 3 = 9 × (  ) = 27 2 × 9 =   3 × 7 =  
9 × 5 = (  ) × 7 = 63 5 × (  ) = 15 (  ) × 2 = 14
4 × 3 = 4 × (  ) = 24 9 × (  ) = 45 (  ) × 5 = 35
9 × 4 = (  ) × 5 = 40 6 × 3 =   3 × 6 =  
4 × 6 = 5 × (  ) = 15 7 × 8 =   (  ) × 7 = 49
6 × 2 = 5 × (  ) = 35 6 × 6 =   3 × 4 =  
9 × 7 = (  ) × 4 = 4 6 × (  ) = 48 (  ) × 7 = 49
8 × 4 = 2 × (  ) = 4 6 × 7 =   6 × (  ) = 36
9 × 8 = (  ) × 4 = 12 (  ) × 8 = 64 (  ) × 4 = 8
2 × 5 = (  ) × 8 = 64 9 × 6 =   5 × 2 =  
2 × 8 = 3 × (  ) = 6 8 × (  ) = 40 (  ) × 1 = 2
9 × 2 = (  ) × 6 = 24 2 × 4 =   2 × (  ) = 2
3 × 9 = 4 × (  ) = 32 6 × 2 =   8 × (  ) = 8
8 × 4 = (  ) × 5 = 5 (  ) × 4 = 32 6 × (  ) = 54

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