55 (five) is a number, numeral and dit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. Humans, and many other animals, have 5 dits on their limbs. See moreFree kindergarten to grade 6 math worksheets, organized by grade and topic. Skip counting, addition, subtraction, multiplication, division, rounding, fractions and much more. No