Cecilia says she can use addition to solve multiplication problems. is cecilia correct?

She is correct you can just add the number you are trying to multiply various times like for example 3x32 it can just be 32+32+32

Yes. For example, if you are trying to get the answer to the multiplication problem 3x2, the answer would be 6 and if you did addition, you would be adding 3+3 and get the same answer. 3x5 would be 3+3+3+3+3.