数学教学设计-能被2、5整除的数
[10-16 11:56:27] 来源:http://www.xuehuiba.com 小学五年级数学教案 阅读:8480次
概要:2 × 0 = www.xuehuiba.com 2 × 10 = 2 × 100 =2 × 1 = 2 × 11 = 2 × 101 = 2 × 2 = 2 × 12 = 2 × 102 = 2 × 3 = 2 × 13 = 2 × 103 = 2 × 4 = 2 × 14 = 2 × 104 = 2 × 5 = 2 × 15 = 2 × 105 = 2 × 6 = 2 × 16 = 2 × 106 = 2 × 7 = 2 × 17 =
数学教学设计-能被2、5整除的数,标签:小学数学教案,http://www.xuehuiba.com
2 × 0 = www.xuehuiba.com
2 × 0 = www.xuehuiba.com
2 × 10 = 2 × 100 =
2 × 1 = 2 × 11 = 2 × 101 =
2 × 2 = 2 × 12 = 2 × 102 =
2 × 3 = 2 × 13 = 2 × 103 =
2 × 4 = 2 × 14 = 2 × 104 =
2 × 5 = 2 × 15 = 2 × 105 =
2 × 6 = 2 × 16 = 2 × 106 =
2 × 7 = 2 × 17 = 2 × 107 =
www.xuehuiba.com2 × 8 = 2 × 18 = 2 × 108 =
2 × 9 = 2 × 19 = 2 × 109 =
……
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师:观察3组算式,每组第一个因数 都是和几位数想乘?
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师:3组算式的因数和积,什么没变?什么变了?
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