6.56 + = 6.6

What is the answer?

If you mean 6.56 + 6.6, the answer is 13.16.

You will need to do the reverse operation to get the answer quickest.

So 6.6 - 6.56 = ?. Think of it as 60 - 56. I think you know it is four.

So 6.6 - 6.56 =.04 Now the reverse is 6.56 +.04 = 6.6