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