Get ready to become a Professor of maths and show your audience that you are the ultimate maths wizz!

Show four rectangular blocks with random numbers printed the whole way around each block. The spectator places them in any configuration and color order they wish. They then proceed to add up all the numbers in front of you on their calculator or a notepad - HOWEVER... In a flash and in under 2 seconds you can reveal the answer using your amazing mathematical talents. The amazing part is the spectator can keep rotating the blocks and change the colors and the numbers will be different every time. You will know super fast the total sum number.

The method is so easy you will be able to learn this trick in under a minute. So easy to perform yet it does amaze! 

Made of environmentally friendly plastic. Bright and colorful.

Demo: