MULTIPLICATION BY 25 :Suppose you are given a large number like 125690258. And someone asks you to multiply that number by 25. What will you do?
Probably you will do nothing but go for simple multiplication. Now, we suggest you to multiply that number by 100 and then divide by 4.
To do so remember the two steps :
Step I: Put two zeroes at the right ofthe number (as it has to be multiplied by 100).
Step II: Divide it by 4.
So, your answer is 12569025800 4 = 3142256450. Is it easier than your method?
Share new methods & leave your comments below...
Click here to top