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## 4th grade (Eureka Math/EngageNY)

### Unit 1: Lesson 1

Topic A: Place value of multi-digit whole numbers- Place value blocks
- Place value blocks
- Place value tables
- Place value tables
- Comparing with multiplication
- Comparing with multiplication and addition: giraffe
- Compare with multiplication
- Finding place value
- Identify value of a digit
- Creating the largest number
- Creating largest or smallest number
- Multiplying whole numbers by 10
- Multiply whole numbers by 10
- Dividing whole numbers by 10
- Divide whole numbers by 10
- Multiply and divide by 10
- Understanding place value
- Place value when multiplying and dividing by 10
- Place value when multiplying and dividing by 10
- Writing numbers in words and standard form
- Writing a number in expanded form
- Write whole numbers in expanded form
- Whole numbers in expanded form review
- Write numbers in written form
- Whole numbers in written form review
- Regrouping numbers into various place values
- Regrouping whole number place values
- Adding whole numbers by their place values
- Regroup whole numbers

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# Regrouping whole number place values

CCSS.Math:

Lindsay regroups whole numbers by their place values.

## Want to join the conversation?

- Place value is hard how does it get easy?(4 votes)
- place value shows where one number is in a full number, just think about it like this

842 / 2 = ?

8 / 2 = 4 (800 / 2 = 400)

4 / 2 = 2 (40 / 2 = 20)

2 / 2 = 1 (2 / 2 = 1)

so breaking it up into place values makes the equation easier, because you know where the numbers are separately and what their value is.(5 votes)

- So basicllly you are learning and khan academy will help you with all sorts of math and you will learn it all just choose you grade level and you will be fine but dont spam the comments because you think you can you will have lots of fun on khan academy but quick reminder: DONT mess with your answers and play around on purpouse it will mess you up and you will move down you would not like to move down but the thing is is that once you go down you will go to pre-k and it will make you go up to your grade but really it will mess you up so i guess you will have fun but one more thing have fun and dont forget you are awesome and have a very nice day positive quotes: You are very awesome Everybody likes you No one will block you from your dreams You are peerfect just the way you are You will always have positivity even when your not feeling in anymore Don't give up Try your best Don't rush yourself have Confidence Don't let people block you have a very nice sunny golden heart read each day have life to everyone Tell when you see something unusual when you feel bad don't Tell when you see bad or unsafe things Be nice have love and don't ever care about one person care about everyone and yourself don't lie when you feel like you will have a bad day do something well or always have positivity never give up have your life each day have a new adventure face your fears never ever give up your dreams keep your dreams with you i love you and so will everyone else never do what others tell you to always have power over others never be rude even if others tell you to give other rude people the cold shoulder never have a bad day make sunshine make it happen dont give up your dreams or your ambitions have god,jesus,and the lord be with you and have a very kind and nice day from yours truly

-Suhayla(5 votes)- really gona get hate bro sorry about the comments. but... really? quit being mean to the littles k?(2 votes)

- Why isn't this Sal's voice? hmm...(4 votes)
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## Video transcript

- [Voiceover] Five thousands
equals how many hundreds? There's probably a few
ways we could take this on, but maybe let's start by thinking about these five thousands. Five thousands is 1,000, five times. So let's think about
each of those thousands, each of those five thousands. In 1,000, how many hundreds are in 1,000? 1,000 equals how many hundreds? Well let's see, let's count by hundreds until we get to 1,000, and I'll keep a little tally mark so we can keep count of how
many hundreds it takes us to get to 1,000. 100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000. So it took 10 hundreds, to get to 1,000. So 1,000 is 10 hundreds. So what would 5,000 be? 5,000 is five times as many thousands. So we're also gonna have
five times as many hundreds. So five thousands will equal five times 10 hundreds, because we have 5,000 this time, so we have five times 10 hundreds, or five times 10. Five times 10 is 50. So 5,000 equals 50 hundreds. Another way we could think
about this is place value, so let's do that. Let's look at a place value chart. Here we have a place value chart and if we fill in five under thousands we can see that we have
three empty spaces. We have no hundreds, no tens and no ones, So we need to fill those in with zeros, or 5,000. Again, it's 5,000. Writing the word thousands
essentially replaced those three zeros. Five thousands is the same as five with three zeros behind it, and now we want to change
these five thousands to be hundreds. Well when we read this place value chart, when we read five, when we stopped here, five is the last number we read and then we read the place
value above it, thousands. So for hundreds we'll do the same thing up until the hundreds. We'll read the place value chart until the place value we want and then the place value. So five thousands is
the same as 50 hundreds. Five thousands is equal to 50 hundreds, and we don't have to include
these last zeros on the end because just like thousands
implied three zeros, hundreds, by saying hundreds we've essentially implied
that these zeros are there. So five thousands is equal to 50 hundreds. We weren't asked about tens but we could look here
and figure it out, I bet. Tens I would say, is 500 10s. We'd read up through the
tens and then the tens place because 10s have one zero after them. That zero is implied when you say 10, and then finally, if we
went all the way to the end, we could also say that this
number is equal to 5,000 ones. So any of those, five thousands, 50 hundreds, 500 tens or
5,000 ones, are equivalent. They're all equal to each other, but the one we were
asked about was hundreds. So five thousands equal 50 hundreds. Here's another one. 30 tens equals how many hundreds? So this time we're looking
at tens and hundreds. So let's think about how
tens and hundreds relate. How many tens are in 100? How many tens are in 100 and
we could write one hundred, the word or the number in 100. Well to figure that out
if we don't know already, we can count tens. We can count by 10s and see
how many 10s it takes us to get to a hundred. One ten is 10, 20, 30, 40, 50 60, 70, 80, 90, 100. So we got to a hundred
and it took us 10 tens. There are 10 tens in 100. So if there's 10 tens in 100 how many hundreds are in 30 tens? Well to get from 10 tens to 30 tens, that's three times as many tens, so we'll also have three
times as many hundreds, or three hundreds. 30 tens is three sets of 10 tens. 10 tens are a hundred. So another way to think of that is 30 tens is three sets of hundreds,
or three hundreds. We could also think about
this in terms of place value. Here we have this tens and we know that tens can
be represented by a zero. So instead of 30 10s, we
could simply write a 30 with a zero on the end,
that zero for tens, and then over here, equal
to, we have hundreds and hundreds can be
represented by two zeros. So to make these equivalent, what number will need
to fill in this spot? And the answer again, is a three
like we already saw up top. So 30 10s is equal to three hundreds.