**Click here for the Spanish version: ****https://youtu.be/HuhZwdTQh9E**

**In This Unit of Study…**

Students will recognize that the equal sign represents “the same as.” They will determine if addition/subtraction equations are true or false. Students will also solve for the unknown (in any position) relating 3 or 4 whole numbers in an subtraction/addition equation.

**B.E.S.T. Benchmarks:**

**MA.2.NSO.2.1***Recall addition facts with sums to 20 and related subtraction facts with automaticity.***MA.2.AR.2.1**Determine and explain whether equations involving addition and subtraction are true or false**MA.2.AR.2.2**Determine the unknown whole number in an addition or subtraction equation, relating three or four whole numbers, with the unknown in any position

**Overarching Key Concepts:**

*Fluency: Solve addition and subtraction facts using*the ‘doubles’ strategy- Determine and explain if equations are true or false and solve for the unknown