Lili wrote the number 11 use mental math to tell what number has? 3 more tens than 11

Thats college mathematics? haha.

anyway. 3 more tens would be thirty. and then thirty plus eleven could be mental mathed by thirty plus ten followed up by the erm one. (might not seem necessary in this certain question but adding tens first is a terrific tactic.) please post questions identical to these in the middle school section at the least.

Six people to the minimal staar