I am sure that I am going to get low marks in math even though I have?
You should not confront them. You should prepare yourself to answer two questions honestly, directly, and succinctly. Questions to yourself from yourself. What is the cause for or causes for the low marks? The answer may not be obvious, so be real, denial and rationalization are not useful at this point. What is the plan to address the above causes so that low marks are unlikely in the future? The plan may be elaborate or quite simple.