This is a free Magic Number of the Day. It covers addition, subtraction, and rounding for 3rd grade. Magic Number of the Day is a fun way for your students to learn or review math standards from the whole year! This 8 page powerpoint includes: --No copy or prep required! --1 week worth of Magic Numbers of the Day --An answer key --Standards over rounding, addition, and subtraction --Incentives on every day ("Come show your teacher the magic number when you are done to get a prize"): You can use