PMC 2014-15 Q8

Author:Arthur Lee, Anthony OR 柯志明

The length and width of this picture are 8 cm and 6 cm. You can drag the red dot to enlarge or reduce the picture. (a) when its width is 3cm, what is its length? (b) when its width is 10 cm, what is its length?

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小数的副本
兩位數除以一位數（一）
算柱 (兩位數)
畫出對稱圖形
近似值：有效數字

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test2
謝謝 80335 盧沛宏
大小相同串珠
表内除法
Twghmkc_P5分數乘法

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Unit Circle
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