SOL 3.2 – The student will recognize and use the inverse relationships between addition/subtraction to complete basic fact sentences. The student will use these relationships to solve problems.
SOL 3.20ab – The student will investigate the identity and the commutative properties for addition and identify examples of the identity and commutative properties for addition.
SOL 3.4 – The student will estimate solutions to and solve single-step and multistep problems involving the sum or difference of two whole numbers, each 9,999 or less, with or without regrouping.
Using Base Ten Blocks
Solving Word Problems with Thinking Blocks
Below is a list of Mr. Bradford’s recommended IXL activities for number sense and place value based on Virginia SOLs. Be sure to login on IXL before you begin!
Inverse Relationship of Addition & Subtraction
Properties of Addition
- Commutative, Identity & Associative Properties Please note: We do not study associative, so think of it as a non-example of identity and/or commutative.