How much is 80 with 20 percent off?

First we have to know what is 20% of 80,

then we can find out how much 80 would be with that 20% off.

So let's do this:

Think of 20% as .20.

Think of the Word "of" as "times" (so you will be multiplying).

So now your question is:

.20 x 80 = ?

the answer is 16.

So now you want to know, how much is 80 with that 20% off, or how much is 80 minus that 16?

80 - 16 = 64.