Reusable Number of the Day Work! Students can use this page in a page protector with a dry erase marker every morning to practice place value and number skills. I have used this page for as morning work/ a bell ringer daily with 2nd graders. Page could also be used as a math center or a warm-up for math time. Excellent formative quick check for 2NBT.A.3 and 2NBT.B.8 or review of place value skills for older students.