Common Core Alignment

CCSS.Math.Content.1.OA.7 - Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.

5: Math

Unit 9: Addition to 100
Lesson 1: Some Base-10 Review
Lesson 8: More Composing 10 to Add