Think You Know Babies? Only Veteran Moms Will Ace This Quiz!Share:FacebookPinterestTwitterMailAt what age do children begin to lose their teeth?100% Correct Incorrect The correct answer is 5 to 6 years. At what age do children begin to lose their teeth? 3 to 4 years 4 to 5 years 5 to 6 years 6 to 7 years 100%