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Grade 3 Find the Mistake Worksheet with Answers
Grade 3 (US) · Year 4 (UK) · Class 3 (India) · Math
Unit 6: Going FurtherThinking & Problem SolvingAdvanced
Looking at a worked answer, finding the step that went wrong and writing the correct answer. This free upper elementary worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comFind the Mistake
Grade 3 · Math
Name
Class
Date
Learning goal: Thinking & Problem Solving
Directions: Look carefully at each picture, then write your answer in the box.
- 1
Look at Aisha's work. Find the mistake and write the correct answer.
Answer - 2
Look at Noah's work. Find the mistake and write the correct answer.
Answer - 3
Look at Zoe's work. Find the mistake and write the correct answer.
Answer - 4
Look at Lena's work. Find the mistake and write the correct answer.
Answer - 5
Look at Lena's work. Find the mistake and write the correct answer.
Answer - 6
Look at Mia's work. Find the mistake and write the correct answer.
Answer - 7
Look at Sam's work. Find the mistake and write the correct answer.
Answer - 8
Look at Ava's work. Find the mistake and write the correct answer.
Answer - 9
Look at Sam's work. Find the mistake and write the correct answer.
Answer - 10
Look at Omar's work. Find the mistake and write the correct answer.
Answer - 11
Look at Noah's work. Find the mistake and write the correct answer.
Answer - 12
Look at Ravi's work. Find the mistake and write the correct answer.
Answer
★ Challenge corner for fast finishers
I am thinking of a number. If I add 6, I get 36. What is my number?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/math/3/find_the_mistake
Answer key — Find the Mistake (Grade 3)
- 1.86
- 2.388
- 3.139
- 4.971
- 5.860
- 6.781
- 7.401
- 8.513
- 9.169
- 10.613
- 11.823
- 12.266
- ★30
Answer key (click to show)
- 1.86
- 2.388
- 3.139
- 4.971
- 5.860
- 6.781
- 7.401
- 8.513
- 9.169
- 10.613
- 11.823
- 12.266
- ★30 (challenge corner)
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Create a free accountHow to use this worksheet
- Use it as a 10–15 minute warm-up or homework task rather than a long drill.
- Ask students to show their working so you can see where a mistake started, not just that it happened.
- Mark it with the answer key together, then print a fresh version of the same topic to practise the questions they missed.
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Frequently asked questions
Does this Grade 3 Find the Mistake worksheet come with answers?
Yes. The full answer key is on this page, and it prints on its own page after the questions. Every answer is calculated or checked by code rather than written by an AI model, so the key is always correct.
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Yes. This worksheet is free to print, and Practice Sheet is free to use during our launch with no card needed.