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数学
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999.9*222.2+333.3*333.4简便计算
人气:233 ℃ 时间:2020-03-23 03:41:43
解答
999.9×222.2+333.3×333.4
=3×333.3×222.2+333.3×333.4
=333.3×(3×222.2)+333.3×333.4
=333.3×666.6+333.3×333.4
=333.3×(666.6+333.4)
=333.3×1000
=333300
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