Common Core Alignment

CCSS.Math.Content.1.OA.3 - Apply properties of operations as strategies to add and subtract.3 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

5: Math

Unit 3: Addition and Subtraction to 10
Lesson 4: More Practice with Addition
Unit 5: Addition and Subtraction to 20
Lesson 2: More About Addition
Lesson 3: Adding to 20
Lesson 4: More Adding to 20
Lesson 5: Addition Games and Crafts
Lesson 7: Problem Solving
Final Project: Numbers Are Missing!
Unit 10: Skills Review
Lesson 1: Reviewing Addition and Subtraction