Three percent of 150,000 is 4,500. This is a pretty simple equation to work out

- Work out ten percent of the number first. For a number as big and rounded off as this, working out ten percent is simple, just take a 0 off the end of it. This gives us 15,000
- From this, we can then work out one percent of the number, by simply taking off another 0, giving us 1,500.
- Then, just times this number by three to get your three percent. By working out what one percent of a number is, you can then times that amount to any number to work out that percentage of it. This, of course, gives us the answer: 4,500.