Interactive Problem Solving - Thinking Blocks
Thinking Blocks Interactive Tutorials - Model and solve word problems with addition and subtraction. Online interactive tutorial (First-Fourth).
Online Word Problems with Double-Digit Addition and Subtraction
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Online Word Problems with Triple-Digit Addition and Subtraction
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Online Word Problems with Double-Digit Addition and Subtraction Two Steps
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Online Word Problems with Double-Digit Addition and Subtraction Extra Information
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Online Word Problems with Addition and Subtraction Challenge Problems
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Represent and solve problems involving addition and subtraction.
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
Solve problems involving the four operations, and identify and explain patterns in arithmetic.
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.
Use the four operations with whole numbers to solve problems.
Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. 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.