This was a card game that my kids loved! I put them in the erasable mats so they can reuse the page. I also have digit cards 0-9 that the kids use with this game. They flip three cards over and round to the the numbers to the nearest ten. I turned it into a game by handing out counters (points) and the player with the higher number (once it was rounded to nearest ten) earned a point.
The kids played this game with rounding to nearest ten and hundreds!