The rich flavor of this ramen is wonderful, isn't it?

What is five plus four in this problem?

He is smart, plus, he is funny.

He added my name to the list.

This project includes not only basic functions but also additional elements.

I think this project needs further improvement or addition.

Please tighten this screw using a Phillips screwdriver.

Understanding plus or minus is important for this problem.

His efforts and his negligence cancel each other out.

Makoto is my best friend.