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6.15-(2.97+1.75)简便运算
写错了,是6.25
人气:311 ℃ 时间:2020-05-26 11:29:01
解答
6.15-(2.97+1.75)
=6.15-3+0.03-1.15-0.6
=6.15-1.15-3+0.03
=5-3+0.03
=2.03
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