ok i understand now what 3/4 means and i know what 1/2 of a cup is but what does 3/4 of a cup mean. You can do it with blocks but not with how much is in the cup. I don't understand. will someone help me?

You can do it with blocks. Let four blocks equal a cup, then three of them represent 3/4 of a cup.

thats easy enough thank you very much! I like to think of everything much more difficult I guess.

You're welcome! It's common to sometimes overthink things, but breaking them down into simpler concepts can often make them easier to understand. If you have any other questions or need further clarification, feel free to ask!