How can you create 3 quadrilaterals by moving exactly 3 sticks?

Turn these five squares into four squares by moving three sticks?

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

Moving only two sticks from the number formed with matchsticks, what is the largest number that you can get?

Create a three dimensional cube moving 3 sticks.

1 nối 2 và 13

2 đối diện 1 thành hình vuông 1-2-3-13