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题型:单选题 题类:常考题 难易度:容易
苏教版数学五年级下册第四单元分数的意义和性质同步练习(三)
① + = ② ﹣ = ③ + = ④ ﹣ = ⑤ + =
⑥1+ = ⑦ + ﹣ = ⑧ ﹣ ⑨ + = ⑩1﹣ + =
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