I am a math intervention teacher for grades 3-5. I enjoy creating activities and worksheets that make teaching common core math standards easier. This activity aligns with the common core standards 3.NBT.1 and 4.NBT.3 Round multi-digit whole numbers. This packet includes activities for rounding to the nearest hundred and ten. Using a deck of cards, students will play engaging games in which they will form either 2 or 3 digit numbers and then round them to the nearest hundred or ten. There is a student answer sheet that allows them to record their answers. This is a great activity for small groups, centers or stations, extra practice for students who complete work early, or to send home with students for extra practice. Because pages 2-4 are game boards I recommend printing them on cardstock and laminating them for years of use! Enjoy!