I played football at the weekend
1-Where did you play?
2-where did you played?
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Sign up to join this communityThe first option: Where did you play? Is the correct one.
When forming the past tense in questions, we use an auxiliary verb "do" to indicate tense. So do becomes did. The main verb has the bare infinitive form, and never changes.
Where did you play?
Where do you play?
Where does he play?
If another auxillary verb is used (for example for perfect tense or continuous tense) that changes, not the main verb
Where is he playing?
Where was he playing?
This appears to be a question about forming questions about the past, specifically the interrogative equivalent of the past simple. You want, I gather, the question that might lead to the answer "I played at Footown Stadium".
As explained on the British Council's Learn English site, the interrogative (questioning) form of the past simple uses did followed by the subject, with the uninflected verb (i.e. the bare infinitive) (much as the negative uses do not). Thus, to form the question you want, you end up with:
Where did you play?
Using the preterite (past simple) or past participle forms of the verb in this case would be incorrect.