二年级上册口算题-二年级两位数的加减法
奥数网
2017-02-21 14:40:35
(1)15 + 69 =
(2)35 + 39 =
(3)42 - 32 =
(4)32 + 81 =
(5)81 - 77 =
(6)75 - 45 =
(7)61 - 46 =
(8)69 + 79 =
(9)57 + 17 =
