Ten Thousands and Hundred Thousands

10 thousands make 10,000, and 10 ten thousands make 100,000.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 2

Count by thousands: 7,000, 8,000, 9,000. What comes after 9 thousands?
10 thousands make ten thousand! It needs a new place on the left: the ten thousands place.
And 10 ten thousands make one hundred thousand, in the hundred thousands place.
Here is 352,817. The comma comes after the thousands digit. The part before the comma, 352, tells how many thousands: three hundred fifty-two thousand.
Each place is worth ten times the place to its right. The 3 in 352,817 is in the hundred thousands place, so it's worth 300,000.

Georgia's K-12 Mathematics Standards:

4.NR.1.1 — Read and write multi-digit whole numbers to the hundred-thousands place using base-ten numerals and expanded form.