To convert the improper fraction \( \frac{35}{4} \) into a mixed number:
- Divide 35 by 4, which gives 8 with a remainder.
- \( 4 \times 8 = 32 \)
- The remainder is \( 35 - 32 = 3 \).
So, we can express \( \frac{35}{4} \) as a mixed number:
\[ 8 \frac{3}{4} \]
Thus, the whole number part is 8.