5 cool math tricks ft. Technicality

Dianna shares her favorite math tricks, including calculating tips, multiplying by 11 and 9, and using geometry to find square roots. She also demonstrates a trick based on the Chinese Remainder Theorem, explaining its application in encryption. The video combines practical math tips with insights into why these tricks work.

What method did Dianna use to calculate a 20% tip on a $170 bill?

Explain the trick for multiplying numbers by 11 as described by Dianna.

How does the finger trick for multiplying by 9 work?

Describe the process Dianna used to find the square root of 32 using geometry.

How can you construct the square root of any number using pipe cleaners?

What was the final outcome of the math trick involving Alex and the number he thought of?

What is the Chinese remainder theorem and how is it applied in the math trick shown?