1st Grade Math Addition Worksheets & Printables - TeacherVision VIEW FIRST GRADE MATH TOPICS 1 Less or 1 More To practice adding and subtracting the number one, students must count, draw, and write "1 more" or "1 less" than the numbers provided. Knowledge of the numbers from 0 to 100 is necessary for this printable math worksheet. 10 More or 10 Less