二年级数学口算题：尾数是0三位数加减法

【-二年级数学试卷】

二年级数学口算题：尾数是0三位数加减法

(1)310 + 690 =

(2)830 + 610 =

(3)930 + 210 =

(4)440 + 720 =

(5)290 - 210 =

(6)590 - 410 =

(7)270 - 140 =

(8)650 - 190 =

(9)840 - 730 =

(10)340 + 360 =

(11)920 - 530 =

(12)580 + 400 =

(13)540 - 220 =

(14)350 - 260 =

(15)550 - 440 =