How To Multiply Two Numbers By Using Doubling Method || cambridge syllabus

How To Multiply Two Numbers By Using Doubling Method

what is mean by doubling a number?

• Means to double the given number.

• There are three methods to double a number. 

  Methods: 

  1)Method one: By adding
  2)Method Two: By multiplying by 2
  3)Method Three:By multiplying 2 given numbers For Example(13 x 25 = ?)

  For finding the Multiplication of number 13 and number 25 fellow the given steps below:

  steps:

  1) strat with 1 and 25
  2) working downwards, double each number untill you have a number just         below 13 in the left hand column.
  3) Tick the number in the left-hand column that add up to 13
      1+4+8 = 13
  4) Add together the number in the ticked row in the right column.
      25+100+200=325
  5)so 13x25 = 325 

    Let For Complete understanding watch cool video: