Week 22: Three-digit addition and subtraction

Skills and concepts for Three-digit addition and subtraction.

1. 1. Add 3-Digit Numbers Vertically (Carrying the 1s and 10s)
2. 2. Word Problems: 3-Digit Addition
3. 3. Subtract a Multiple of 100 from a 3-Digit Number
4. 4. Mixed Practice: Subtracting Groups of 10 or 100
5. 5. Subtract 3-Digit Models (No Regrouping)
6. 6. Subtract 3-Digit Models (With Regrouping!)