Yes to add on to what the previous person has stated, for papers 1 in both physics and math, you cannot use a calculator. For physics, paper 1 is multiple choice so the math is simple and you do not need a calculator to do it which is why it is not allowed. For math, paper 1 is designed to touch on all (or most of) the topics in math that does not need a calculator (learning how to do derivatives without calc, sketching graphs, finding intercepts, etc...) I would not be too worried about this.