题目内容
按规律填数
①306090____________
②666555444____________.
①306090____________
②666555444____________.
①90+30=120,
120+30=150;
②444-111=333,
333-111=222;
故答案为:120,150,333,222.
120+30=150;
②444-111=333,
333-111=222;
故答案为:120,150,333,222.
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