## how to write 7-digit whole numbers in expanded and standard form for k12 fifth grade students

Sure, here’s an explanation of how to write 7-digit whole numbers in expanded and standard form for a k12 fifth grader:

Standard form is simply the way we normally write numbers, with digits in their appropriate places. For example, the number 5,234,198 is written in standard form.

To write a 7-digit whole number in standard form, we need to determine the value of each digit based on its position in the number. The place values of a 7-digit number, from left to right, are millions, hundred thousands, ten thousands, thousands, hundreds, tens, and ones.

For example, in the number 5,234,198,

- the digit 5 is in the millions place,
- the digit 2 is in the hundred thousands place,
- the digit 3 is in the ten thousands place,
- the digit 4 is in the thousands place,
- the digit 1 is in the hundreds place,
- the digit 9 is in the tens place, and
- the digit 8 is in the ones place.

To write this number in expanded form, we need to write the value of each digit based on its place value.

So we have:

5,234,198 = (5 x 1,000,000) + (2 x 100,000) + (3 x 10,000) + (4 x 1,000) + (1 x 100) + (9 x 10) + (8 x 1)

= 5,000,000 + 200,000 + 30,000 + 4,000 + 100 + 90 + 8

= 5,234,198

To write a 7-digit whole number in expanded form, we simply write the value of each digit based on its place value. For example, the number 7,654,321 can be written in expanded form as:

(7 x 1,000,000) + (6 x 100,000) + (5 x 10,000) + (4 x 1,000) + (3 x 100) + (2 x 10) + (1 x 1)

= 7,000,000 + 600,000 + 50,000 + 4,000 + 300 + 20 + 1

= 7,654,321

I hope this helps for k12 school kids learning math!