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.

1.OA.D.7: Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

1.OA.D: Work with addition and subtraction equations.

Commutative property to 20 - Connecting Cubes-Copy.Use strategies such as counting on making ten decomposing a number leading to a ten using the relationship between addition and subtraction. 1.OA.C.6: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.Solve addition sentences using number lines - sums up to 20.1.OA.C.5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).Make a number using addition - sums up to 10.Complete the addition sentence - sums up to 10.Complete the addition sentence - make ten.Subtraction strategies: Relate addition and subtraction sentences.1.OA.B.4: Understand subtraction as an unknown-addend problem.(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. 1.OA.B.3: Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known.1.OA.B: Understand and apply properties of operations and the relationship between addition and subtraction.Solve addition word problems - sums up to 10.1.OA.A.2: Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.Write an addition sentence that fits the story (two-digit numbers).Solve addition word problems with sums up to 20.Scaffolded addition word problems with sums up to 10.

Solve addition word problems with pictures.This goal covers the following objectives.1.OA.A.1: Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.1.OA.A: Represent and solve problems involving addition and subtraction.

Georgia state 1st grade sight words