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N 36   (pg.44-46)   Doubling and Halving

        Doubling ( x2)
Example :
Double : 360

      600 + 120 = 720

        Halving (÷ 2)                            Study:
Example:                             Half of :
Half : 840                           10 = 5        100    =   50
                                     30 = 15       300    =   150
   400 + 20 = 420                    50 = 25       500    =   250
                                     70 = 35       700    =   350
                                     90 = 45       900    =   450

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Book N36 Doubling and Halving

  • 1. N 36 (pg.44-46) Doubling and Halving Doubling ( x2) Example : Double : 360 600 + 120 = 720 Halving (÷ 2) Study: Example: Half of : Half : 840 10 = 5 100 = 50 30 = 15 300 = 150 400 + 20 = 420 50 = 25 500 = 250 70 = 35 700 = 350 90 = 45 900 = 450