题目内容
20.06×65+380×2.006-2.006×30.
20.06×65+380×2.006-2.006×30
=2.006×650+380×2.006-2.006×30,
=2.006×(650+380-30),
=2.006×(1030-30),
=2.006×1000,
=2006.
=2.006×650+380×2.006-2.006×30,
=2.006×(650+380-30),
=2.006×(1030-30),
=2.006×1000,
=2006.
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