123+456+789+987+654+321
=(123+987)+(456+654)+(789+321),
=1110+1110+1110,
=3330;
故答案为:3330.
计算:123+456+789+987+654+321=_.
计算:123+456+789+987+654+321=______.
数学人气:245 ℃时间:2019-08-22 21:33:48
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