Adding with regrouping
Topic Notes
In this lesson, we will learn:
- How to use base ten materials to represent numbers
- Writing numbers in expanded form
Notes:
- Regrouping
10 ones can be regrouped into 1 ten:
![Representing Numbers: Tally Marks](
https://dmn92m25mtw4z.cloudfront.net/img_set/math5-4-4-x-1/v1/math5-4-4-x-1-959w.jpg)
10 tens can be regrouped into 1 hundred:
![Representing Numbers: Tally Marks](
https://dmn92m25mtw4z.cloudfront.net/img_set/math5-4-4-x-2/v1/math5-4-4-x-2-1207w.jpg)
10 hundreds can be regrouped into 1 thousand
![Representing Numbers: Tally Marks](
https://dmn92m25mtw4z.cloudfront.net/img_set/math5-4-4-x-3/v1/math5-4-4-x-3-1207w.jpg)