Math Seesaw Activities
​3rd Six Weeks

---

7-1 Regrouping 1 Ten for 10 Ones

7-2 Models to Subtract 2- and 1-Digit Numbers

7-3 Subtracting 2- and 1-Digit Numbers 

7-4 Models to Subtract 2-Digit Numbers

7-5 Subtracting 2-Digit Numbers

7-6 Subtracting on a Number Line

7-7 Using Addition to Check Subtraction

7-8 Problem Solving: Writing Math Stories

7-9 Problem Solving: Two-Step Problems

8-1 Exploring Adding 3-Digit Numbers 

8-2 Mental Math

8-3 Models for Adding with 3-Digit Numbers

8-4 Adding 3-Digit Numbers

8-5 Exploring Subtracting 3-Digit Numbers

8-6 Mental Math: Ways to Find Missing Parts