# Things That Come in Tens [Discovering Numerical Symmetry]

In a world filled with numbers and patterns, the concept of “ten” holds a special place. From our earliest years, we learn to count to ten, and it becomes a foundation for our understanding of mathematics and the world around us.

So, which things come in ten? Years in a decade, Fingers on both hands, Decimal digits, Decennial (every 10 years) census, these are the things that come in ten. From mathematics to culture, nature to technology, prepare to be amazed by the ubiquity of this remarkable number.

Join us as we unveil the hidden connections, surprising facts, and unexpected wonders of things that come in tens. Let’s dive in and celebrate the significance of this remarkable number.

## A Visual List of Things That Come in Tens

### Decimal System

The decimal system, also known as the base-10 or denary system, is a numeral system that uses ten distinct digits to represent numbers.

These ten digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The decimal system is the most widely used numeral system in the world today.

In the decimal system, each digit’s position in a number determines its value. For example, the number “123” in the decimal system represents 1 hundred (100), 2 tens (20), and 3 ones (3), adding up to 123.

There are 10 years in a decade. A decade is a period of 10 years, and it is commonly used as a way to organize and refer to a specific time frame or era.

For example, the 1980s represent a decade that includes the years from 1980 to 1989.

Decades are often used for historical, cultural, and statistical purposes to analyze and categorize events, trends, and data.

### Fingers on Both Hands

There are typically 10 fingers on both hands combined. Each hand has five fingers: the thumb, index finger, middle finger, ring finger, and little finger, totaling ten fingers in total when you consider both hands.

These fingers are essential for various tasks, including grasping objects, performing fine motor skills, and facilitating communication through sign language or gestures.

### Decennial Census

The decennial census is a population count that occurs once every ten years. It is conducted by the government of a country to collect demographic and other relevant information about its residents.

The decennial census is a crucial tool for governments to ensure representation, allocate resources effectively, and make informed decisions. It is conducted in various countries around the world, including the United States, where it plays a vital role in shaping the nation’s political and social landscape.

### Decapod

A “decapod” is a term used in biology and zoology to refer to a group of crustaceans that have ten legs.

Decapods are characterized by their five pairs of walking legs, which distinguish them from other crustaceans with a different number of legs.

Decapods are a diverse and large group of crustaceans that include many familiar species, such as crabs, lobsters, shrimp, and crayfish.

### Sneezewort

Sneezewort is the common name for a flowering plant known as Achillea ptarmica. It’s known for having ten petals in its flowers, which are small, white, or pale pink.

These petals radiate from the central disc of the flower, creating a distinctive and attractive appearance.

### Decagons

A decagon is a polygon with ten sides and ten angles. In a regular decagon, all sides have equal length, and all angles have equal measure.

However, decagons can also be irregular, where the sides and angles vary in size. The sum of the interior angles of a decagon is always 1440 degrees.

Decagons can be found in various contexts, including geometry, architecture, and design.

In architecture, for example, a building might have a decagonal floor plan or include decagonal elements in its design.

### Toes on a Pair of Feet

A pair of feet typically consists of ten toes. The toes on the foot are usually arranged as follows:

• Big Toe (Hallux): The largest and innermost toe.
• Second Toe: The toe next to the big toe.
• Third Toe: The toe following the second toe.
• Fourth Toe: The toe adjacent to the third toe.
• Little Toe (Pinky Toe): The smallest and outermost toe.

These toes serve as crucial appendages in our daily lives, facilitating balance and enabling various activities.

Each toe is a marvel of biomechanical engineering, contributing to our ability to stand, walk, run, and engage in a wide range of physical tasks.

### Bowling Pins

Bowling enthusiasts are intimately familiar with the ten pins arranged in a triangular formation. Bowling pins play a central role in the game of bowling, where the objective is to knock down these ten pins using a rolling bowling ball.

Typically, the pins are set up in four rows, with one pin in the front row, two pins in the second row, three pins in the third row, and four pins in the back row.

### Members of a Decathlon Team

A decathlon is an individual athletic event that consists of ten track and field events.

It is not a team event; it is an individual multi-event competition. In a decathlon, each athlete competes individually to earn points based on their performance in each of the ten events.

These events cover a wide range of athletic skills, from sprinting and jumping to throwing and endurance running.

The athlete who accumulates the most points across all ten events is declared the winner of the decathlon.

Dimes

Dimes are a denomination of currency commonly used in the United States and some other countries. In the U.S., a dime is worth ten cents, equivalent to 1/10th of a U.S. dollar. Dimes are one of the standard coins in circulation.

Dimes are widely used in everyday transactions for making small purchases, and they are an essential component of the U.S. monetary system.

They are also commonly used in coin-operated machines, such as vending machines and parking meters.

### Ten Digits on Two Hands

When counting on our fingers, you can represent numbers up to 10 by using both hands, making it a natural and intuitive way to teach basic arithmetic.

• Decimal Birthday: Celebrating one’s 10th birthday is often seen as a significant milestone in a child’s life, as they enter double digits.
• Top 10 Lists: “Top 10” lists are a popular format in entertainment and media, covering a wide range of subjects, from music and movies to books and travel destinations.
• 10 Downing Street: It’s the official residence and office of the Prime Minister of the United Kingdom, making it one of the most famous addresses in the world.
• 10 on the pH Scale: In chemistry, the pH scale measures the acidity or alkalinity of a substance. A pH of 10 indicates a moderately alkaline solution.

## Final Words

In the grand tapestry of existence, the number ten weaves its intricate pattern, leaving an indelible mark on our understanding of the world.

As I conclude this exploration, remember that in the world of tens, there’s a story waiting to be discovered behind every digit.