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题型:单选题 题类:常考题 难易度:普通
分数和百分数及运算8346 10
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72÷ = 2× = 1 + - = ( + )×9=
3.14×20= 1.5×100= 1.25×8= 99×0.8+0.8=
〇1
〇
36÷〇36
50×( )%=100
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