Share การคูณ 10 20 30 ...90 (2)
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8 x 50
400
6 x 30
180
90 x 4
360
70 x 7
490
40 x 5
200
30 x 6
180
60 x 4
240
60 x 9
540
50 x 7
350
20 x 5
100
