Mrs. Washer filled the gas tank of her car. She used 2/3 of a tank driving to the beach. She used another 1/6 of the tank driving to her hotel. How much gasoline is left in the tank?

Answer 1

1 - 2/3 - 1/6 = 6/6 - 4/6 - 1/6 = 2/6 - 1/6 = 1/6