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Adding Four Digit Numbers

How to add four digit numbers (for example 4529 + 6733):

  • Place one number above the other so that the thousands', hundreds', tens' and ones' places are lined up. Draw a line under the bottom number.
  • 
    4529
    6733
    
    
  • Add the ones' place digits (9 + 3 = 12). This number is larger than 10 so place a one above the tens' place column and place the two below the line in the ones' place column.
  • 
      1
    4529
    6733
       2
    
  • Add the tens' place digits (1 + 2 + 3 = 6) and place the answer below the line and in the tens' place column.
  • 
    4529
    6733
      62
  • Add the numbers in the hundreds' place column (5 + 7 = 12) and place the 2 below the line and before the other number below the line. Place the 1 from the twelve above the thousands' place column.
  • 
    1
    4529
    6733
     262
  • Add the digits in the thousands' place column (1 + 4 + 6 = 11) and place the answer below the line in the thousands' place column.
  • 
     4529
     6733
    11262





Practice

Find the Sum of the two Numbers.

  +     =      


You have correct and   incorrect.  This is percent correct.

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How many correct answers can you get in 60 seconds?
Extra time is awarded for each correct answer. Play longer by getting more correct.
How fast can you get 20 more correct answers than wrong answers?

Sudoku

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