# Help With Essential Math

By Marija KeroEssential math is knowing how to multiply, divide, add and subtract. Get assistance with essential math with help from an experienced mathematics professional in this free video clip.

### Transcript

Hi, my name is Marija, and today I'm going to give you some help with essential math. Now depending on what grade you're in, what essential math is to you would be different. For everybody essential math is knowing how to multiply, divide, add and subtract at the very least, right. And the easiest way to help learn those things is to use flashcards. OK depending on what skill it is you're trying to learn you should definitely pull out some flash cards or make some flashcards to help you memorize those important facts about multiplying, dividing, adding and subtracting. Those are definitely all essential parts of math. A part of math that we see in every day life that I believe is very essential is percentages. So we're going to do a quick tutorial on some help with quick percentages. You're going to see percentages when you do sales, when you do tax, tip, things like that. So for example if you're in a restaurant and you've got a bill that is 80 dollars and you want to figure out the tip quickly in your head. I think this is an essential part of every day life. What you want to do is if you want to do 20 percent, you find ten percent very easily by taking the decimal point and moving it back just one space. So that means that ten percent of 80 dollars would be eight dollars. And then to find 20 percent all I have to do is double it because ten percent of 20 percent is double so if I double eight dollars I'm going to get 16 dollars. So very quickly without a calculator without pen and pencil you can find out what 20 percent or ten percent of a number is. So we're going to find ten percent, you just move back one space and that gives me eight dollars, And if I double that number I get 16, that's my 20 percent. So that is some help with essential math.