三年级口算题:一位数除两位数 (1)63 ÷ 3 = (2)70 ÷ 5 = (3)22 ÷ 2 = (4)20 ÷ 5 = (5)20 ÷ 5 = (6)56 ÷ 2 = (7)57 ÷ 3 = (8)90 ÷ 5 = (9)78 ÷ 3 = (10)91 ÷ 7 = (11)38 ÷ 2 = (12)75 ÷ 3 = (13)40 ÷ 8 = (14)72 ÷ 9 = (15)72 ÷ 2 =