Colorful House of Math logo
Log in

The Digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)


A digit is a number that consists of only one symbol. If you think about it, you’ll see that the only numbers like this on the real line are the numbers

0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

All the numbers on the real line are made up of these digits. In short, the ten digits are the building blocks of our numeral system. It might sound a bit strange that these exact numbers can be called both numbers and digits, but it’s no more strange than some of your friends having both a first name and a middle name.

The math master bathing in numbers

There are more numeral systems than just the decimal numeral system. For example, computers and iPads are built on the binary numeral system. This numeral system only use the digits 0 and 1.

Think About This

Can you come up with some numbers and tell me how many digits each number is made up of?

Here are some examples:

  • 7 is made up of one digit,

  • 1 is made up of one digit,

  • 1242 is made up of four digits,

  • 555 is made up of three digits,

  • 283 is made up of three digits,

  • 304 is made up of three digits,

  • 35 is made up of two digits,

  • 1156 is made up of four digits,

  • 8991 is made up of four digits,

  • 26 is made up of two digits,

  • 100 is made up of three digits,

  • 68 is made up of two digits,

  • 55334 is made up of five digits,

  • 17021 is made up of five digits,

  • 4 is made up of one digit,

  • 534564 is made up of six digits,

  • 0 is made up of one digit,

  • 1000000 is made up of seven digits.

The math master stacking numbers

Math Vault

Would you like to solve exercises about the digits? Try Math Vault!

Want to know more?Sign UpIt's free!
Next entryWhite arrow pointing to the right
How Do Significant Figures Work?