Week 21: Three-digit addition

Skills and concepts for Three-digit addition.

1. 1. Add a Multiple of 100 to a 3-Digit Number
2. 2. Mixed Practice: Adding Groups of 10 or 100
3. 3. Add 3-Digit Numbers with Models (No Regrouping)
4. 4. Add 3-Digit numbers using Models (With Regrouping)
5. 5. Use Compensation to Add up to 3 Digits
6. 6. Mixed Practice: 3-Digit Addition