二年级口算题:两位数加两位数的加法 (1)53 + 19 = (2)54 + 53 = (3)30 + 56 = (4)66 + 36 = (5)79 + 56 = (6)93 + 98 = (7)20 + 48 = (8)61 + 33 = (9)81 + 51 = (10)96 + 55 = (11)73 + 34 = (12)30 + 72 = (13)64 + 71 = (14)66 + 92 = (15)65 + 44 =