8 ÷ 2 = 4, 10 ÷ 5 = 2, 14 ÷ 2 = 7 , 20 ÷ 5 = 4, 20 ÷ 10 = 2,

Division by Grouping (3 - Numberline)

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?