Week 4: Addition and subtraction

Skills and concepts for Addition and subtraction.

1. 1. Add two numbers up to three digits
2. 2. Add two numbers up to three digits: word problems
3. 3. Subtract numbers up to three digits
4. 4. Subtract numbers up to three digits: word problems
5. 5. Add and subtract three-digit numbers
6. 6. Two-step addition and subtraction word problems