试题 试卷
题型:填空题 题类: 难易度:普通
全国数学竞赛决赛真题四十
2.22×9.9+6.66×6.7 17.8÷(1.78×4) 101×0.87-0.91×87
0.79×199 9.24÷3-10.5×0.25 72×0.03+0.3×2.8
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