6 - 3 = 3, 8 - 4 = 4, 9 - 7 = 2, 3 - 0 = 3, 7 - 3 = 4 , 8 - 2 = 6, 9 - 4 = 5 , 8 - 1 = 7, 9 - 0 = 9, 6 - 4 = 2,

MATHEMATIC YEAR 1 (subtraction)

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?