To convert a 7-digit number from expanded form to standard form, we need to add up the value of each digit in its respective place value.

Starting from the leftmost digit, the place values for a 7-digit number are millions, hundred thousands, ten thousands, thousands, hundreds, tens, and units.
For example, the number 7,020,100 can be written in expanded form as:
7,000,000 + 20,000 + 100
To convert this number to standard form, we add up the value of each digit in its respective place value:
7 x 1,000,000 (7 million)
0 x 100,000 (0 hundred thousands)
2 x 10,000 (20 thousand)
0 x 1,000 (0 thousands)
1 x 100 (100 hundreds)
0 x 10 (0 tens)
0 x 1 (0 units)
Adding these values together gives us:7,000,000 + 20,000 + 100 = 7,020,100

To convert from expanded form to standard form for a 7-digit number, we need to add up the value of each digit in its respective place value.

In this case, we have:
4,000,000 + 600,000 + 50,000 + 1,000 + 200 + 30 + 9
The digit in the millions place is 4, so we add 4,000,000 to the total.
The digit in the hundred thousands place is 6, so we add 600,000.
The digit in the ten thousands place is 5, so we add 50,000.
The digit in the thousands place is 1, so we add 1,000.
The digit in the hundreds place is 2, so we add 200.
The digit in the tens place is 3, so 30.
The digit in the units place is 9, so we add 9.
Adding up all these values, we get:4,000,000 + 600,000 + 50,000 + 1,000 + 200 + 30 + 9 = 4,651,239

To write a number in expanded form, we need to find the value of each digit based on its place value.
In a 7-digit number, the place values are millions, hundred thousands, ten thousands, thousands, hundreds, tens, and ones.
Let's look at each digit in the number 4,589,203 and its corresponding place value:
The digit 4 is in the millions place, so it has a value of 4,000,000.
The digit 5 is in the hundred thousands place, so it has a value of 500,000.
The digit 8 is in the ten thousands place, so it has a value of 80,000.
The digit 9 is in the thousands place, so it has a value of 9,000.
The digit 2 is in the hundreds place, so it has a value of 200.
The digit 0 is in the tens place, so it has a value of 0.
The digit 3 is in the ones place, so it has a value of 3.
Now we can add up all of these values to get the expanded form of 4,589,203:
4,000,000 + 500,000 + 80,000 + 9,000 + 200 + 3 = 4,589,203

To convert a 7-digit number from expanded to standard form, we need to add up the value of each digit in its respective place value.

For the given number, we have:
5,000,000 + 200,000 + 10,000 + 500 + 20 + 1= 5,210,521

To convert from expanded form to standard form, we need to add up the value of each digit in its respective place value.

Starting from the leftmost digit, we can add the values of each place value together to get the standard form of the number:
3,000,000 + 400,000 + 20,000 + 1,000 + 300 + 50 + 2 = 3,421,352
Therefore, the correct answer is 3,421,352.

To convert a 7-digit number from standard form to expanded form, we need to write it as the sum of its place values.
Let's look at the number 7,654,321:

The digit 7 is in the millions place, which means its value is 7 x 1,000,000 = 7,000,000
The digit 6 is in the hundred thousands place, which means its value is 6 x 100,000 = 600,000
The digit 5 is in the ten thousands place, which means its value is 5 x 10,000 = 50,000
The digit 4 is in the thousands place, which means its value is 4 x 1,000 = 4,000
The digit 3 is in the hundreds place, which means its value is 3 x 100 = 300
The digit 2 is in the tens place, which means its value is 2 x 10 = 20
The digit 1 is in the ones place, which means its value is 1 x 1 = 1
Now we just add up all of these values to get the expanded form of 7,654,321:
7,000,000 + 600,000 + 50,000 + 4,000 + 300 + 20 + 1

When we write a number in expanded form, we write it as a sum of the values of each of its digits.
We do this by looking at the place value of each digit in the number.
To write the expanded form of 8,643,219, we'll look at each digit in the number and determine its value based on its place value.
Here's how we do that:
The digit 8 is in the millions place, which means its value is 8 x 1,000,000 = 8,000,000
The digit 6 is in the hundred thousands place, which means its value is 6 x 100,000 = 600,000
The digit 4 is in the ten thousands place, which means its value is 4 x 10,000 = 40,000
The digit 3 is in the thousands place, which means its value is 3 x 1,000 = 3,000
The digit 2 is in the hundreds place, which means its value is 2 x 100 = 200
The digit 1 is in the tens place, which means its value is 1 x 10 = 10
The digit 9 is in the ones place, which means its value is 9 x 1 = 9
Now we can add up all of these values to get the expanded form of 8,643,219:
8,000,000 + 600,000 + 40,000 + 3,000 + 200 + 10 + 9
So the expanded form of 8,643,219 is 8,000,000 + 600,000 + 40,000 + 3,000 + 200 + 10 + 9.

To convert this number into expanded form, we need to write out the value of each digit in terms of its place value.

In a 7-digit number like 6,784,321, the place values are:
Millions
Hundred thousands
Ten thousands
Thousands
Hundreds
Tens
Ones (or units)
Starting from the leftmost digit, we can write out the expanded form of the number by multiplying each digit by its corresponding place value and adding them all together.
For the number 6,784,321,
the expanded form would be:6,000,000 + 700,000 + 80,000 + 4,000 + 300 + 20 + 1
In this example, the digit 6 in the millions place is multiplied by 1,000,000 to give 6,000,000, the digit 7 in the hundred thousands place is multiplied by 100,000 to give 700,000, and so on.
So the expanded form of 6,784,321 is
6,000,000 + 700,000 + 80,000 + 4,000 + 300 + 20 + 1.

To convert a 7-digit number from standard form to expanded form, we need to break down the number into its place values.
In this case, the place values for a 7-digit number are millions, hundred thousands, ten thousands, thousands, hundreds, tens, and units.
Starting from the leftmost digit in 8,974,356, we have:
8,000,000 (8 million)
900,000 (9 hundred thousands)
70,000 (7 ten thousands)
4,000 (4 thousands)
300 (3 hundreds)
50 (5 tens)
6 (6 units)
Therefore, the expanded form of 8,974,356 is A) 8,000,000 + 900,000 + 70,000 + 4,000 + 300 + 50 + 6.

To convert from expanded form to standard form for a 7-digit number, we need to add up the value of each digit in its respective place value.
In this case, we have:
2,000,000 + 500,000 + 60,000 + 7,000 + 800 + 20 + 1 = 2,567,821
Therefore, the correct answer is 2,567,821.
To arrive at this answer, we added up the value of each digit in its respective place value.
The digit 2 in the millions place has a value of 2,000,000,
the digit 5 in the hundred thousands place has a value of 500,000,
the digit 6 in the ten thousands place has a value of 60,000, and so on.
We then added up all of these values to arrive at the final answer of 2,567,821 in standard form.