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國小五年級數學應用題

Apr 9th 2014, 10:41

第二題:

有一個長方體, 長是寬的2倍, 寬是高的3倍, 寬是30公分, 這個長方體體積是多少立方公分?

長 = 2 × 寬
寬 = 3 × 高
寬 = 30 公分
因此，長 = 2 × 寬 = 2 × 30 = 60 公分
高 = 寬 ÷ 3 = 30 ÷ 3 = 10 公分

這個長方體體積是 60 × 30 × 10 = 18000 立方公分。

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