This Excel workbook contains a full set of easily printable practice sheets and quizzes over the 12x12 multiplication facts.
For older students (i.e. Middle School / Junior High), consider using the # fact quizzes in the last half of the workbook to get the to practice specific fact families. Give them one minute to complete as many as possible. By having the "correct" answers at the top of the page, your students will confidently practice with the correct answers, instead of quickly throwing random numbers on the page.
This is a great warm-up activity to challenge students who are comfortable with these facts, while helping students who feel "behind" when it comes to these important pieces of mathematics.