亲爱小朋友们，今天为你准备了小学二年级数学口算题，相信大家一定能够努力做、开动脑筋，做出满意的答卷。加油啊!!!
(1)480 + 580 =
(2)470 + 110 =
(3)330 + 210 =
(4)520 + 930 =
(5)540 + 370 =
(6)370 + 530 =
(7)910 + 910 =
(8)580 + 850 =
(9)210 + 410 =
(10)530 + 390 =
(11)240 + 790 =
(12)650 + 640 =
(13)670 + 220 =
(14)890 + 260 =
(15)670 + 280 =