In this fun center activity, students will sort subtraction facts according to whether the difference is true or false! I used these as a pocket chart center with my 2nd graders and they loved every minute of it! The May file includes subtraction facts of -0 through -9. Offers both a color and black and white version. Clipart for May features a basket of daisies. Includes recording sheet. Save $5 if you purchase the year-round bundle!