3. (3 points) Teacher Zhang saws a piece of wood into 9 small segments, each 4 meters long. If this piece of wood is sawed into segments that are 3 meters long, how many times in total will it need to be sawed? $\qquad$
【Answer】Solution: $4 \times 9 \div 3=12$ (segments),
$$
12-1=11 \text { (times), }
$$

Answer: It needs to be sawed 11 times.
Therefore, the answer is: 11.