What a great way to practice number sense this fall! Students add and subtract 10 and 50 for 2-digit numbers, and 10 and 100 for 3-digit numbers. 3 leveled sheets are perfect for differentiation during math groups and math centers, or you can use the sheets whole group at different points this Fall as the students progress in their skills. I plan to use these as seatwork during math centers or morning work. Also could be great homework! Also check out my springtime and summer number sense packs!