二年级上册口算题-二年级整十数减两位数的减法
奥数网
2017-02-21 14:40:09
(1)70 + 45 =
(2)50 + 26 =
(3)30 + 24 =
(4)20 + 19 =
(5)30 + 24 =
(6)70 + 25 =
(7)30 + 19 =
(8)20 + 14 =
(9)30 + 15 =
