Mixed Addition and Subtraction Word Problems (393)

Lesson Plan

Solving Mixed Operation Word Problems

Standards

Printable Aids

Teaching Notes

Focus on identifying keywords (e.g., 'in all,' 'left') and the problem's context to determine the correct operation. Encourage drawing or using manipulatives to visualize the problem before solving.

Vocabulary

Mixed Operations: Using both addition and subtraction.

Determine: To figure out or decide.

Common Mistakes

• Choosing the incorrect operation (addition instead of subtraction or vice-versa).
• Making calculation errors even after setting up the problem correctly.
• Misunderstanding the question or relevant numbers within the story.

Differentiation

Discussion Questions

• What clues helped you decide if you needed to add or subtract?
• How can you check your answer to make sure it is reasonable?
• Can you retell the story problem in your own words?
• What would happen if we changed an 'add' word (like 'altogether') to a 'subtract' word (like 'left')?

Extension Activities

• Sort problems by operation.
• Create your own stories.
• Use manipulatives.

Parent Tip

Use toys to create stories asking 'how many now?' or 'how many left?'.

Skill Cluster

Problem Solving & Operations

Grade Level

2-3

Skills Practiced

Prerequisites

• Reading Comprehension
• Basic Addition
• Basic Subtraction
• Single-Digit Addition Fluency
• Single-Digit Subtraction Fluency
• Understanding Simple Word Problem Structures

Next Steps

• Multi-Step Word Problems
• Multiplication Word Problems
• Mixed Addition and Subtraction Word Problems (within 100)
• Multi-Step Addition and Subtraction Word Problems