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数学二年级下册 青岛版五四制
付费 · 全34集 · 5107人在学习
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1-30
31-34
15:05
1、千以内数的认识
付费
13:15
2、认识算盘
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14:59
3、万以内数的认识
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11:23
4、近似数
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09:22
5、万以内数的大小比较
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13:32
6、整百、整千数的加减法
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09:06
7、万以内数的估计
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14:24
8、毫米与分米的认识
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08:46
9、认识千米
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09:31
10、搭配问题
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14:26
11、两位数加、减两位数
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13:32
12、三位数加减法(不进位、不退位)
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15:58
13、三位数加减三位数(不连续进位、退位)
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14:25
14、三位数加、减三位数的验算
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11:49
15、长方形和正方形的特征
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14:37
16、平面图形的拼组
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14:09
17、三位数加减三位数(连续进位、退位)
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13:32
18、被减数中有0的三位数减法
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08:29
19、求比一个数多(少)几的数
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14:27
20、万以内的加减混合运算
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17:16
21、克与千克的认识
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16:11
22、吨的认识
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11:57
23、两位数乘一位数(不进位)
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17:24
24、两位数乘一位数(进位)
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12:52
25、求比一个数的几倍多(少)几的数
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13:40
26、有趣的竖式
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15:18
27、三位数乘一位数(不进位)
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18:45
28、三位数乘一位数(进位)
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19:26
29、因数中间或末尾有0的乘法
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15:32
30、数据的收集与整理
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