Integer Operations Error Analysis Worksheet

No-prep integer operations error analysis worksheet for Middle School, KS3 and Grades 6-8. Students identify sign mistakes, correct the work and explain the rules.

Welcome to Integer Hospital, where students become maths doctors and examine six incorrect or correct integer calculations.

For each patient, students must:

• Check the student’s calculation
• Decide whether the calculation is Healthy or Needs Treatment
• Correct any mistakes
• Explain the relevant integer sign rule

The activity finishes with two independent Final Check questions, allowing teachers to quickly assess students’ understanding.

What is included:

• 1 printable student activity page
• 6 integer error-analysis cases
• 2 Final Check questions
• Complete answer key
• Explanations of each sign rule
• Teacher misconception checklist
• Quick classroom-use guidance

Skills covered:

• Adding positive and negative integers
• Subtracting negative integers
• Multiplying integers with different signs
• Dividing integers with different signs
• Applying the correct order of operations
• Identifying and explaining mathematical errors

Perfect for:

• Classroom starters
• Independent practice
• Pair discussion
• Error-analysis lessons
• Maths intervention
• Homework
• Revision
• Cover or substitute lessons
• Exit tickets

This print-and-go activity requires no preparation. Simply print page 1 for students and use page 2 for marking, discussion and identifying common misconceptions.

File format: A4 PDF
Age range: 11-14
Suitable for: Middle School, KS3 and Grades 6-8

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