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666.66×7778+333.33×4444
人气:261 ℃ 时间:2020-03-21 11:09:19
解答
666.66x7778+333.33x4444
=2×333.33×7778+333.33x4444
=333.33×(15556+4444)
=333.33×20000
=6666600
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