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  • 作文大全網提供《奧數的樂趣》
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    奧數的樂趣

    文章作者:作文大全網 | 時間:2015-02-20 16:22:12 | 來源:作文大全網

      周末,是一個讓人充滿歡樂的日子,但此時的我卻快樂不起來,之前不理想的考試成績,讓我郁悶至極。在家里做著習題,想從奧數的海洋中找到一些樂趣。

      翻著翻著,我的目光停留在一道題上,跟比例和立體圖形有關。以前,比例一直是我數學學習中的一道難坎,但我這次卻想突破困難,完成答題。

      這道題的題目是這樣的:甲乙兩個圓柱體容器,底面積之比為4:3,,甲容器水深7厘米,乙容器中水深3厘米,再往兩個容器注入同樣多的水,直道水深相等,這樣加容器的水面應上升多少厘米?觀察了一會,我突然明白了這道題的思路:由于甲乙兩個容器的底面積之比為4:3,往這兩個容器中注入同樣多的水,水上升的高度比是3:4,也就是說乙容器中水面上升的高度比甲容器水面上升的水面高度高三分之一,但結果水深相等,說明原來甲乙兩個容器中水深相差的4厘米,也就是甲容器水面上升高度的三分之一。

      這道題的解法是:(7-3)除以(4/3-1)=12厘米。

        六年級:王慧雯

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