问题
解答题
543+545+547+549+551=______×______.
答案
543+545+547+549+551,
=(547-4)+(547-2)+547+(547+2)+(547+4),
=(547+547+547+547+547++(2-2+4-4),
=547+547+547+547+547,
=547×5.
故答案为:547,5.
543+545+547+549+551=______×______.
543+545+547+549+551,
=(547-4)+(547-2)+547+(547+2)+(547+4),
=(547+547+547+547+547++(2-2+4-4),
=547+547+547+547+547,
=547×5.
故答案为:547,5.