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##### LESSON SET
Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.3 Created by Jeanette Simpson
• 3.OA.D.8
teaches
Common Core State Standards
CCSS.Math.Content.3.OA.D.8
http://corestandards.org/Math/Content/3/OA/D/8
• #### Solving two-step word problems using a model

In this lesson you will learn to identify the operations in two step word problems by using problem solving steps and a model.

• 3.OA.D.8
• #### Solve two-step problems using parenthesis

In this lesson you will learn to solve multi-step problems by understanding the use of parentheses.

• 3.OA.D.8
• #### Solve two-step problems using letters to represent unknowns

In this lesson you will learn to solve two step story problems by using letters to represent unknown quantities in equations.

• 3.OA.D.8
• #### Estimate solutions to two-step word problems

In this lesson you will learn to estimate solutions to multi-step story problems by rounding.

• 3.OA.D.8
• #### Assess reasonableness of an answer using front end estimation

In this lesson you will learn to check if your answers to story problems are reasonable by using front end estimation.

• 3.OA.D.8