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题型:填空题 题类: 难易度:困难
【小白鸥-情境题】数学北师大六上第七单元自测卷(2)
①7×(9.3﹣5.8)﹣3.5
②9×( - )×6
③4.79× +21%÷
④ ÷[( - )× ]
= = 20×50%= =
= = = =
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