Access practice addition tests on Fun4TheBrain.com and Multiplication.com, as of 2015. Both websites feature free online tests that are graded and corrected online. Results are printable.
Access practice addition tests on Fun4TheBrain.com by clicking Quizzes/Tests on the home page. Links for available quizzes are displayed. Tests are organized by grade level. Tests for subtraction, multiplication and division are also available.
Access practice addition tests on Multiplication.com by clicking Books & Resources, clicking Interactive Quizzes and then Addition Self-Correcting Quizzes. Tests are organized by fact family on the next page. After selecting a test, the website prompts to click Start to begin the test.