Where Form 2220 Percentages 2023-2024

Hi, I'm Casey Johnson. I'm a fourth grade math teacher, and today we're talking about long division methods for elementary school. I'm going to show you three different ways you can do long division. One is probably one that you recognize, while the other two might be unfamiliar to you. Let me start with the one that you probably recognize. 463 divided by 5 is the problem I'm going to solve. Now, this is the traditional or the standard algorithm. I'd ask myself, "How many fives can I take out of four?" Well, I can't take any, so I'll go ahead and go to the 46. How many fives can I take out of 46? I can take 9, as 9 times 5 is 45. I take those out and have one left. I bring down the 3. How many fives can I take out of 13? I can take 2, as 2 times 5 is 10. I take those out and have 3 left. I don't have anything left to bring down, so that 3 becomes my remainder. Now, let me show you a couple of other ways. 463 divided by 5. This one is called short division. It's the exact same process as the other, just in less space. How many fives can I take out of 4? None. How many fives can I take out of 46? I can take 9. That's 45, so there will be one left. I write a little one right there. How many fives can I take out of 13? I can take 2. Two times five is 10, so I have 3 left. There's nothing left over here, so that three becomes my remainder. You can see how this would be quite handy. It doesn't take up a lot of space, and it's...