1.OA.D.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.

Begin to understand the meaning of the equal sign. Students have probably only seen problems where the sum or difference is on the right. They’re probably also used to evaluating one side. Show things like 3 = 3, 1 = 2 – 1, and 1 + 3 = 2 + 2, are all valid. Equals is “same” for numbers. Convert word problems to equations. For example, John has 3 M&Ms. Steve has 3 Reeses pieces. Use = to show John and Steve have the same number of candies. This translates to 3 = 3. Jack has 2 dog stickers and 3 cat stickers. Tom has 1 dog sticker and 4 cat stickers. Use = to show Jack and John have the same number of stickers. This translates to 2 + 3 = 1 + 4.