算願:比を簡単にしよう1 なまえ . 5 : 25 =
15 : 9 = 4 : 20 = 6 : 8 = 20 : 16 = 6 : 2 = 3 : 9 = 12 : 8 = 12 : 3 = 8 : 10 = 6 : 3 = 4 : 12 = 6 : 12 = 6 : 10 = 6 : 3 = 20 : 4 = 2 : 8 = 20 : 12 = 15 : 12 = 20 : 12 = 12 : 6 = 2 : 4 = 4 : 20 = 8 : 6 = 20 : 8 =
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