Answers are available for some, but not all, of Mr.Anker's third-grade tests. The website has no page with an answer key, according to the site map.
The spelling test has a word list button on the start window. Students can study the words before taking the test. When the student spells each word, a message immediately appears saying whether the answer is correct or not. At the end, the student can again view the word list but cannot compare his answers with the correct ones.
The fractions test allows the learner to try again until he chooses the correct answer.
The "Halfway Between" exercise, which is training for rounding numbers rather than a test, gives the answer when the student answers incorrectly.