In Chapter 1, We are learning addition and subtraction strategies.

Lesson 1: Identify number patterns on the addition table

Lesson 2: Round to the nearest ten or hundred

Lesson 3: Estimate sums

Lesson 4: Use strategies for addition

Lesson 5: Use properties to add

Lesson 6: Estimate differences

Lesson 7: Use strategies for subtraction

CHAPTER 1 VOCABULARY WORDS

1. Commutative Property of Addition

2. Identity Property of Addition

3. Associative Property of Addition

4. Compatible Numbers

5. Estimate

6. Round

7. Pattern

8. Add

9. Subtract