Here's a fun two-player game to practice rounding. Students can play individually, in pairs, or as a class. There are TWO different games; each has 20 questions. Students will round to the nearest whole number, integer, tens, hundreds, thousands, tenths, hundredths, thousandths, decimal places, and significant figures. If a student answers correctly, his cell will change to his assigned color, and the opponent's cell will also change to that color, locking him out from answering. The game is SELF-GRADING and available in Google Sheets. Answer key is included.