You're clearly smart enough to know how to read and write and type and use the internet. Find a website that can help you learn math, and start from there ixl.com/promo?partner=google&phrase=Sear... khanacademy.org/?gclid=CN-fj4qTqq0CFaQRN....
I will assume you are not trolling. If this man is interested in marrying you, he probably doesn't think you're dumb. You should also know that not being formally educated does not mean you are stupid - you are likely as smart as the next person.
And because you've been working with your mom, you probably know a lot more about running a household than most people of your age do. So you aren't stupid - you just lack formal education in math and English and stuff like that. If you want to learn stuff, teach yourself.
Get some books from the library, from the kid's section, that start from scratch, and read the subjects that interest you. With time, you'll find you end up knowing a lot about those subjects. It sounds like math interests you, so get a basic math book, one that focuses on addition and subtraction, and start there.
Once you've mastered that, move on to multiplication. Give yourself time - remember, kids learn this over the course of some years, not all at once, so don't get frustrated if you don't grasp everything right away. Give yourself time, but work on it steadily, and you'll start learning.
There may also be free classes on basic math in your town that you can take. There are also websites.
You obviously know how to use the internet. So your intelligence is that of a dog... if that helps?
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.