奧數(shù) > 小學(xué)試題庫 > 口算題 > 一年級口算題 > 正文
2017-02-20 17:40:09
(1)2 - 1 =
(2)3 - 2 =
(3)4 - 1 =
(4)4 - 2 =
(5)2 - 2 =
(6)3 - 3 =
(7)2 - 2 =
(8)2 - 1 =
(9)2 - 2 =

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