I want my students to be able to look at a simple expressions and equations and find their solutions quickly and accurately. Here is a Powerpoint presentation where students are given 20 problems to quickly solve. Set the slide show to transition between slides at a speed (i.e. 30 seconds) that you would want the students to solve the expression or equation. Answers are provided at the end of the 20 questions. This can also be used as a warm-up activity.