720÷45的简便计算怎么写?

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63×99的简便计算怎么写

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75×98的简便计算怎么写

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72×25的简便计算怎么写

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102×43的简便计算怎么写

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630÷42的简便计算怎么写?

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44×25的简便计算怎么写?

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504×25的简便计算怎么写

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3150÷45的简便计算怎么写

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720÷45的简便计算怎么写?

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125×56的简便计算怎么写

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63×99的简便计算怎么写

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75×98的简便计算怎么写

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72×25的简便计算怎么写

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102×43的简便计算怎么写

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630÷42的简便计算怎么写?

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44×25的简便计算怎么写?

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504×25的简便计算怎么写

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3150÷45的简便计算怎么写

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