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