Some percents are easy to figure. Here are a few:
Finding 100% of a number: Remember that 100% means the whole thing, so 100% of any number is simply the number itself:
100% of 5 is 5
100% of 91 is 91
100% of 732 is 732
Finding 50% of a number: Remember that 50% means half, so to find 50% of a number, just divide it by 2:
50% of 20 is 10
50% of 88 is 44
Finding 25% of a number: Remember that 25% equals 1/4, so to find 25% of a number, divide it by 4:
25% of 40 is 10
25% of 88 is 22
Here’s a trick that makes certain tough-looking percent problems so easy that you can do them in your head. Simply move the percent sign from one number to the other and flip the order of the numbers.
Suppose someone wants you to figure out the following:
88% of 50
Finding 88% of anything isn’t an activity that anybody looks forward to. But an easy way of solving the problem is to switch it around:
88% of 50 = 50% of 88
This move is perfectly valid, and it makes the problem a lot easier. As you learned above, 50% of 88 is simply half of 88:
88% of 50 = 50% of 88 = 44
As another example, suppose you want to find
7% of 200
Again, finding 7% is tricky, but finding 200% is simple, so switch the problem around:
7% of 200 = 200% of 7
Above, you learned that to find 200% of any number, you just multiply that number by 2:
7% of 200 = 200% of 7 = 2 7 = 14
Hope this helps you!!
