Doubling And Halfing Numbers

 In class, we have been learning about a new maths strategy called doubling and halving.

when you do this strategy you look to see how you can make it easier 

1.  5x48   so first you half the 48 to make that 24 then do 5x2 which equals 10 and 10x24=240

2.  .5x16  first you add half onto the .5  to make it 1 then you half the 16 so that becomes 8 the 1x8=8

3. 4x16 so first you times the 4 by 2 so that becomes 8 and then you divide the 16 by 2 so that becomes 8 and 8x8=64