Did you know that the prefix "deca" means ten? For example, a decade is ten years, and a decagon is a ten-sided shape.

Over the ages, people have attributed many facts to numbers. Numerology, superstition, essential dates, and so many other things cling to various numbers, which in some cases gives them great significance!

Today let’s take a look at ten interesting facts about the number 10.

If you add up the first three prime numbers (2, 3, and 5), you reach the number 10. Prime numbers are special numbers in mathematics that can only be divided by themselves and the number 1.

Most counting systems around the world use the base-ten numeral system. This means that we count in blocks of ten, such as ten, twenty, thirty, and so on. Because of this, any number which has a zero in can always be divided by ten.

The prefix *deca* means ten. As such, a decade is ten years, and a ten-sided shape is a decagon. Another name for the Christian Ten Commandments is the Decalogue.

One of the more unique elements out there, neon, has the atomic number 10. Neon is one of the noble gasses and is complete without color or smell. Neon is most commonly found in neon signs and lights, which produce a reddish-orange glow.

The number ten is connected to the word *decimate*. These days “decimate” means a similar thing to destroy, but this wasn’t always the case. The word’s history goes back to Roman times, where it meant killing one in every ten people as punishment to rebellious groups within Rome’s legions or even to rebellious cities.

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