Arithmetic Grade Three

Lesson One hundred and fifteen: Three Column Regrouping


Here's another example:

	  267
	  x 3
	--------
	
  STEP ONE: multiply bottom number by ones digit of top number.

       7 x 3 = 21

  STEP TWO: carry and bring down.
        
        2
       267
       x 3 
      -----
         1

  STEP THREE: multiply bottom number by tens digit and add carried number.

       3 x 6 + 2 = 20

  STEP FOUR: carry and bring down.

       22
       267
       x 3 
      -----
        01

  STEP FIVE: multiply bottom number by hundreds digit and add carried number.

      3 x 2 + 2 = 8

  STEP SIX: bring down.

       22
       267
       x 3 
      -----
       801

Do these on a sheet of paper before going on to the activity:

	  276			  154		  184
	  x 2			  x 6		  x 3
	-------			-------		--------


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