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数学
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4.28+3.76-0.84 简便运算
人气:107 ℃ 时间:2020-04-25 07:34:46
解答
4.28-(3.76+0.84)4.28-4.60错了,应该是:4.28+(3.76-0.84)
=4.28+2.92
=7.20
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