u/Ok_Flower_1038

I have Provincial Achievement Tests coming up, and I have to do a math test without calculators. Unfortunately I suck at multiplying (mainly because I'm autistic and have a harder time with stuff like that) and we have a maximum time limit of 30 mins to complete 20 questions. I struggle with multiplying a lot even tho I'm 15 and have not said anything about it until now because I'm scared I'll be made fun of for my lack of knowledge. Any tips?

note: I can do my 1-3,5,10-11 times tables if that helps