1. Multi-Digit Whole Numbers
4.NBT.2
Read, Write & Compare
Multi-Digit Whole Numbers
Grade 4
CCSS
Aligned
PowerPoint

2. 4.NBT.2PPT
Place Value – Reading and Writing multi-digit whole numbers
We know that numbers can be written in number form OR standard form…
We can also write 6,765 using words OR word form …
6,765
We say this number as
6 (1000) 7(100) 65
It is written …
Six thousand, seven hundred sixty-five
1000
100 10 1 6 7 5

3. Place Value – Reading and Writing multi-digit whole numbers
4.NBT.2PPT
Place Value – Reading and Writing multi-digit whole numbers
Another way to read and write our numbers is using
Base-10 blocks.
Each block as you know has a value and once we understand these values we can start creating numbers.
Can you see the pattern?
Isn’t 10 an amazing number!
We need 10 hundreds to make a “block” or a Base 1000.
We need 10 tens to make a “flat” or a Base 100.
We need 10 ones to make a “long” or a Base 10.

4. Here is the number 6,575 Thousands Hundreds Tens Ones
4.NBT.2PPT
Here is the number 6,575
Thousands
Hundreds
Tens
Ones

5. So let’s investigate 6,575 further …
4.NBT.2PPT
So let’s investigate 6,575 further …
Thousands
Hundreds
Tens
Ones
6 block OR
6 x 1,000 is
6,000
6 x 1,000 = 6,000
5 flats OR
5 x 100 is 500
5 x 100 = 500
7 longs OR
7 x 10 is 70
7 x 10 = 70
5 ones OR
5 x 1 is 5
5 x 1 = 5 6,

6. 4.NBT.2PPT
This expression of 6,575 is called expanded form. 6,
Expanded form helps us to see what value each number has. It shows us “how many units” in each number.
6,000
500 70 5
6,575 +
Thousands
Hundreds
Tens
Ones
All the numbers added together

7. two hundred thirty-four 1000 + 200 + 30 + 4
4.NBT.2PPT
So we have looked at numbers in 3.
in Base 10 form
Standard form …
1,234
Thousands
Hundreds
Tens
Ones 1. 2.
Word form
One thousand,
two hundred thirty-four
And in
Expanded form 4.
Now we are going to move on and compare numbers using one or more of these expressions.

8. Comparing 2 numbers using symbols
4.NBT.2PPT
Comparing 2 numbers using symbols
This symbol is Greater Than.
Imagine a big mouth eating. The big part is facing the largest number.
673 > 573
<
This symbol is the Equals. Which means both numbers have of the same value.
345 = 345
<
<
405 < 415
This symbol is Less Than. This symbol points to the smaller number.

9. Comparing 2 numbers using symbols
4.NBT.2PPT
The 6 in 673 is
100 more than
the 5 in 573.
Here both
numbers have the same value.
The 0 in 405 is
10 less than
the 1 in 415.
<
E.g > OR = OR < 415
<
Therefore
we use the
Greater Than symbol.
Both can be expanded to
Therefore we use the
Less Than symbol.

10. > 1,235,711 123,571 How to Compare 2 Numbers
4.NBT.2PPT
How to Compare 2 Numbers
Because in grade 4 we learn to read large numbers, it is good to have hints to help understand how to comparing two numbers.
Hint #1:
1st good thing to do is count your digit. The number 1,235,711 has 7 digits and the number 123,571 has 6 digits therefore the 2nd number is automatically smaller.
>
1,235, ,571 1 2 3 4 5 6 1 2 3 4 5 6 7
7 digits
6 digits

11. 4.NBT.2PPT
Now if the new numbers you are comparing have the same number of digits.
We go to hint # 2. 
E.g. New number 6,740, ,640,891 1 2 3 4 5 6 7 1 2 3 4 5 6 7
Hint #2:
We start looking at the digit that is the furthest to the left for both numbers .
Are they the same? No! One is a 6 & the other is a 3
So … we look to see which number has the the greater value. i.e 6,000,000 is greater than 3,000,000.
Therefore …
>
6,740, ,640,891

12. 4.NBT.2PPT
Now if the new numbers you are comparing have the same number of digits and the furthest digit is of the same value.
We go to hint # 3. 
E.g. New number ,740, ,540,891
Same
number! 1 2 3 4 5 6 7 1 2 3 4 5 6 7
Hint #3:
If the furthest digit is the same then you look at the next number, to the right and
6,740, ,540,891
again compare which one has the greater value. i.e. 6,700,000 is greater in value than 6,500,000.
>

13. 4.NBT.2PPT
Last one! Now if the new numbers you are comparing have the same number of digits and the digits to the left are of the same value.
We go to hint # 4. 
E.g. New number ,740, ,740,891
Same
number! 1 2 3 4 5 6 7 1 2 3 4 5 6 7
Hint #4:
The fourth hint is that you need to continue checking the value of the numbers all the way down until you come to the digit that is different.
i.e. 6,740,700 is less than 6,740,800
6,740, ,740,891
<
Happy comparing! 

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