Hi, welcome to Math Antics! Today we're going to talk about an important math concept called order of operations. Order of operations is just a set of math rules that tell you which math operations, like addition or multiplication, to do first. Now, you might be wondering, especially if you're a teenager, why do I need rules to tell me which operations to do first? Can't I just do them in any order I want? Well, that's a really good question, and to answer it, we're going to give two totally different people the same math problem to solve. The problem is 2 plus 5 times 4. Hmm, I like addition better than multiplication, so I'm going to do that first. Let's see, 2 plus 5 gives us 7, and then I just multiply that 7 by 4 and I get 28. That was easy. But you'd better not copy my answer. Don't worry, I'm not going to copy your answer because I want the right answer, and I prefer multiplying, so I'm going to do that first. Let's see, 4 times 5 equals 20, and then I'll add the 2, which gives me 22 for a final answer. What makes you think that's the right answer? All my calculations were correct. I even checked it with a calculator. The only calculator I need is right up here, and the correct answer is 22. Ok, so which one of these guys do you think is right? Me, the one who didn't make any mistakes with the calculations? They just did the operations in a different order and got different answers. Well, since there were no mistakes, in a way, they were both right. But math would be a very confusing subject if there were different answers to the same problem. And that's where order...