clearly a)
you halved one factor and doubled the other.
b) and d) are sheer nonsense
c) is true but shows the distributive propery
which of the following statements shows the halving and doubling strategy to find 28*50
a. 28*50=14*100
b. 28*50= (14*25)*(14*25)
c. 28*50= (20*50)+(8*50)
d. 28*50= 2*(14*25)
1 answer
1 answer