Expanded Form Video 1 st and 2 nd Grade Math

Expanded Form Video 1 st and 2 nd Grade Math

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What's up everyone? How's it hanging? Today guys, we're going to talk about expanded form. So, let's go over and take look at few numbers to learn what expanded form is. Okay, guys. want you to imagine in your mind what slinky looks like. slinky is toy that starts out small but can expand and stretch out. Expanded form is lot like slinky. It's taking the number and pulling apart all of its digits so that we can find out the value. Here is the number 358. This number is in standard form. If we were asked to put this number in expanded form, the first thing we need to know is how much are each of these digits worth? The three in this number is in the hundred's place. So the three is worth 300. Now we have the five. The five in this number is worth 50 because it is in the 10's place. The eight in this number is only worth 8 because it is in the ones place. So if we were to write the number 358 in expanded form, we would have 300 + 50 + 8. Just like slinky that we pull apart, this number is stretched out in expanded form. When you stretch out slinky and let it go, what does it do? it shrinks back together. Let's do that with this number. Now we have the number back in standard form and it looks just like slinky that is not stretched out. Isn't that awesome? Let's look at another example. Here we have the number 417. So how much is the four worth in this number? The four is in the hundred's place. So we have 400. How much is the one worth? The one is in the 10's place, so it is worth 10. How much is the seven worth in this number? Since the seven is in the onees place, we know it is only worth seven. Now, just like that slinky being stretched out, we now have the number 417 in expanded form. It is stretched out to show us what the values of each of these digits are. But we cannot forget to put our plus signs in. When you are writing the numbers in expanded form, you need to remember the addition signs to make the math statement correct. Let's move to this board and look at another number. Let's see if you guys can help me figure out how to write the numbers in expanded form. Here we can see the number 324 in standard form. We need to write this number in expanded form. Let's start by looking at the three. How much is the three worth in this number? 300 because it is in the hundred's place. So, we would write down 300. Now, let's not forget to write down the plus sign. Now, we have the two. What is the value of the two? 20. Since the two is in the 10's place, good job, guys. So, we write down the 20 and put down the addition sign. Last of all, we have the four. What is the four worth in this number? Since the four is in the 1es place, it is worth four. So the number 324 written in expanded form is 300 + 20 + 4. We can also write this math sentence vertically. Let's take look at what it would look like. Here we see the same expanded form in different way. If you were to add all these numbers together, you would get 324. Isn't that awesome, guys? Whenever you are asked to write expanded form, want you to try and think of toy slinky being stretched out so you can see all of the values of each digit. All right, guys. Thanks for being with me today. Keep cool, and we'll see you next time.
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