Whenever we multiply a number by five, the resulting product will always end in a zero or five. Five was seen as the number of the human being because we have four limbs and a head that controls it. Glenn Burke is seen by many to be the inventor of the High Five. He was baseball player for the Los Angeles Dodgers. When he hit a homerun, he spontaneously High Fived his teammate and it was captured on television. This was caught on camera on a National broadcast.

5 Tips to Use Your Math Flashcards More Effectively - Flash cards are one of the classic study tools, and for good reason - they promote studying through active recall, which is one of the practices through which our brains learn most effectively. However, many students use flash cards… well, I don't want to say they use them the wrong way - but they use them in ways that aren't very efficient. Some of the mistakes people make when making and studying flash cards include: 1. Making them in a way that leverages only rote memorization. 2. Creating complex cards that don't force true recall - which leads people to mistake recognition for actual knowledge. 3. Over-using flash cards, or using them when a different tool or study method would be more effective. Here are some of the best practices you can use for applying flashcards effectively: Mix Pictures and Words, Write Only One Question Per Card, Break Complex Concepts into Multiple Questions, Say Your Answers Out Loud When Studying, Study Your Flash Cards in Both Directions. It is time to work on the products when five is the multiplier. Make sure to pay attention to the value that is found at ones place.