• Digit
  A digit is a single whole number (0 to 9) in a number 10 or larger. For example, the number 432 has 3 digits. Each digit has a place value. In the number 432, the 2 is the number of ones in the number.
  
  The 3 is the number of 10's in the number, and the 4 is the number of 100's in the number. So you can add them up, like this:
  

  4 X 100 =	400
  3 X 10 =	30
  2 X 1 =	2
  	---
  	432

  
  
  Now here's a problem for you: What is the 10's digit in the number 5678?
  

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