02乘法02一位數二位數乘以一位數(選擇01)
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26 points
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26 points
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27 points
(1). 任何數乘以10答案都會如何?
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(2). 計算30×50時,只要在3×5的積後面補上幾個0即可?
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(3). 如果乘數變成10倍,被乘數不變,積會如何?
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(4). 一個整數後面加上一個0,就是原數乘以幾倍?
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(5). 11的30倍是多少?
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(6). 10×50的積數共有幾個0?
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(7). 5×60的積是5×6的幾倍?
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