Grasp the pencil and look at the side of it.
Read the side, carefully looking for any number printed on the pencil. If the number 2 or the letters HB are printed on the pencil, you have a #2 pencil.
Pull out your scrap paper if the number 2 was not printed on the pencil. Write a few sentences on your scrap paper. Rub the sentence with your hand to see if it smudges easily. Smudges may indicate you have a #1 pencil. If the words did not smudge, look at it closely to see if it looks lighter and harder to see than usual. The #3 and #4 pencils make lighter marks.