Final answer:
To calculate the number of books Han has, we find 1/3 of Jada's 12 books (which is 4) and subtract it from 12, concluding that Han has 8 library books checked out.
Step-by-step explanation:
Jada has 12 library books checked out, and Han has 1/3 less than Jada.
To find the number of books Han has, we calculate 1/3 of Jada's books and subtract that number from Jada's total.
One third of 12 is 4 (12 × 1/3 = 4).
Subtracting 4 from 12 gives us the number of books Han has checked out:
12 - 4 = 8.
Therefore, Han has 8 library books checked out.