6, 4, 10: 6 + 4 = 10, 4 + 6 = 10, 10 - 4 = 6, 10 - 6 = 4, 2, 3, 5: 2 + 3 = 5, 3 + 2 = 5, 5 - 2 = 3, 5 - 3 = 2, 7, 8, 15: 7 + 8 = 15, 15 - 8 = 7, 8 + 7 = 15, 15 - 7 = 8, 9, 0, 9: 9 + 0 = 9, 0 + 9 = 9, 9 - 0 = 9, 9 - 9 = 0,

Fact Families Sort

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?