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Addition problem sums for grade 2
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Addition Problem sums for grade 2 (primary 2). According to Singapore math method (using bar models for to resolve).
(e.g. Math tools, games, worksheets,etc)
(e.g. Math tools, games, worksheets,etc)
0:04:26
0:06:17
0:07:27
0:10:36
0:02:33
0:06:03
0:06:27
0:59:22
0:07:46
0:08:18
0:10:10
0:04:19
0:11:08
0:00:35
0:06:30
0:00:42
0:04:41
0:16:53
0:05:38
0:04:22
0:02:02
0:13:42
0:14:44
0:03:55