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Áèå äààëò äààëãàâàð
10
2
8
4
6
6
1. Áîëîðò 9 òóóø,ò¿¿íýýñ 5-ààð öººí òîîíû äýâòýð áàéâ. Õýäýí òîîíû äýâòýð áàéñàí âý?
2. (15-6)+4= 10-(15-8)= (7+7)-10=
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3. 15-ààñ áàãà á¿õ òîîíóóäûã áè÷ýýðýé.
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