Sure! Here are the rewritten sentences:

1. Be quiet; otherwise, you’ll wake the baby.
- If you don’t keep quiet, you will wake the baby.

2. Stop chatting or you won’t grasp the lesson.
- If you don’t grasp the lesson, you should stop chatting.

3. I don’t have her number, so I can’t call her.
- If I knew her number, I would call her.

4. I’m unsure of the answer, so I can’t inform you.
- If I knew the answer, I would tell you.

5. Peter is overweight because he consumes too many chips.
- If Peter didn't eat so many chips, he wouldn't be overweight.

6. If you’re not cautious, you might cut yourself with that knife.
- Unless you are careful, you will cut yourself with that knife.

7. If you don’t like this one, I can get you another.
- Unless you like this one, I’ll bring you another.

8. The weather is not nice. We cannot take a walk.
- If the weather were fine, we could go for a walk.

9. I don’t reside in a large city, so I rarely go to the cinema.
- If I lived in a big city, I would go to the cinema more often.

10. Lan doesn’t have a bike; therefore, she walks to school.
- If Lan had a bike, she would not walk to school.