Which number should replace the question mark?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you write down eight eights so that they add up to one thousand?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

When it is alive we sing, when it is dead we clap our hands. What is it?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT