Today is . WELCOME: blthxx/44684  Home | Reg LoginAll user | setHomePage | Bookmark  
Home | Math Test Online | Addition | Subtraction | Multiplication | Division | Time | Worksheet(JPG/PDF) | CAI
 Recommendation article
 Article search
 
 Home--maths--Third Grade--Adding Three Digit Numbers

Adding Three Digit Numbers

Adding Three Digit Numbers

Adding two three digit numbers (for example 529 + 733) involves several steps.

  • Place one number above the other so that the hundreds, tens and ones places are lined up. Draw a line under the bottom number.
    
    529
    733
    
    
  • 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
    529
    733
      2
    
  • Add the tens place digits (1 + 2 + 3 = 6) and place the answer below the line and in the tens place column.
    
    529
    733
     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
     529
     733
     262
  • The thousands place column only has a 1 in it which should be placed below the line in the thousands place column.
    
      529
      733
     1262

Find the Sum of the two Numbers.

  +     =     




2006-10-17 16:07:35
Viewed 2910 times Close
Math Test Online Greatmathsites

Translate

Arabic  Chinese  French  German  Italian  Japanese  Korean  Portuguese  Spanish

Feedback
Thank you to online math channels' Mathematics Department for hosting these lessons.
Copyright © 2006 - 2008 GZtrain Inc. All Rights Reserved