Touchdown Tyler's Estimate or Exact Math Center can be used as an individual center or a whole class game. There are two levels of cards: College and Pro
College cards have 3 digit problems and lower.
Pro cards have numbers in the millions.
Students need to decide whether they would estimate or write an exact answer. Then they solve the problem on the card and record it on the answer sheet. There are 7 cards for each level and blank cards so the students can make their own problems to add to the center. When I play with the whole class I divide the class into teams. The teams get one point for each column of the answer sheet that is correct. I give penalty points for any loud talking or misbehavior.