小学二年级口算题:整千数的加减法小学二年级口算题:整千数的加减法 小学二年级口算题:整千数的加减法 (1)5000 + 2000 = (2)5000 + 2000 = (3)4000 + 3000 = (4)2000 - 1000 = (5)5000 - 4000 = (6)4000 - 1000 = (7)9000 - 8000 = (8)7000 + 1000 = (9)5000 - 2000 = (10)8000 - 5000 = (11)6000 + 1000 = (12)2000 + 5000 = (13)3...