17 Questions Math: Scientific Notation Back-to-School A back-to-school refresher! Represent large numbers in scientific notation and standard notation. Created in cooperation with Mathy Cathy! Mental Math Warm-Up: Which choice represents this value? 0.28 2.8 28 280 Mental Math Warm-Up: Which choice represents this value? 0.28 2.8 28 280 Mental Math Warm-Up: Which choice represents this value? 280 2,800 28,000 Not here … and 14 more awesome questions! Check them out by clicking “Play”.