Solution:

You can see how we did it in the given picture.

Solution:

We have moved the two matchsticks colored in purple and now the resultant figure contains five 1x1 squares, one 2x2 square and one 3x3 square.

Solution:

In the picture you can find the green matchsticks. We have moved them from the bottom and placed them in the middle. It was a bit tricky but now you have your desired result.

Solution:

You can see what we did in the picture attached. If there is any other method you have in your mind, do mail us or comment with your solution.

Solution:

This is a tricky question and you know that by looking at the answer image.

Solution:

The solution is one of the possible way. Can you find an alternate solution?

Solution:

See the figure for the answer. Wasn't it a bit tricky?

Solution:

8

Explanation:
If you look carefully then you will see that five matches lay ahead of the lighter and five are visible in the reflection of the lighter. Out of those five, we can see three matches emerging away from the surface of the lighter but two remains just as a part of reflection. Thus the total number of matches are eight.

Solution:

It can be done as shown below.

Solution:

It can be done as shown below.