02三位數的加減04加減估算(選擇01)

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02三位數的加減04加減估算(選擇01)

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年級 *

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班級 *

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1. 估估看，哪一個數最接近61＋71的正確答案？ *

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2. 估估看，哪一個數最接近59＋58的正確答案？ *

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3. 估估看，哪一個數最接近89－58的正確答案？ *

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4. 估估看，哪一個數最接近71－48的正確答案？ *

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