1A cake is cut into thirds. Mrs. Lee has 7 third-pieces. How many cakes does she have, written as a mixed number?
Show answer & explanation
Answer: 2 1/3
Seven thirds equal 2 1/3 cakes. Three thirds make 1 whole cake. Group the 7 pieces: 3 + 3 + 1. That is 1 whole + 1 whole + 1/3 = 2 1/3. Students may write 7 1/3, treating each third-piece as a whole cake, or miscount the leftover pieces and write 2 2/3.
Seven thirds equal 2 1/3 cakes. Three thirds make 1 whole cake. Group the 7 pieces: 3 + 3 + 1. That is 1 whole + 1 whole + 1/3 = 2 1/3. Students may write 7 1/3, treating each third-piece as a whole cake, or miscount the leftover pieces and write 2 2/3.