Grade 4 find the mistake
This Grade 4 worksheet practices grade 4 find the mistake (Common Core 4.OA.C.5, 4.NF.A.1; Alberta Patterns 1; Alberta Number 5).
8 Grade 4 problems with a student's answer to check. Some are right and some are wrong. With an answer key.
8 problems · answer key on the last page · each version has different numbers · Print from the browser
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On this sheet
- Ben says the least common denominator of 9/10 and 1/6 is 30. Is Ben right? — answer: Yes: the least common denominator is 30
- Emma writes 3,480 ÷ 4 = 87. Find the mistake. Write the correct quotient. — answer: 870
- Leo writes 37/5 as the mixed number 7 2/7. Is Leo right? — answer: No: the answer is 7 2/5
How to teach it
- Work the problem yourself first.
- Compare with the student's answer. If they differ, find the step where it went wrong.
- Say what the mistake was and what the right answer is.
Questions teachers ask
- How many problems are on this worksheet?
- 8 on one page, with the answer key on the last page.
- What grade and standard is it for?
- Grade 4. Common Core: 4.OA.C.5, 4.NF.A.1. Alberta: Patterns 1, Number 5.
- Can I print more than one version?
- Yes. Every version has different numbers and its own answer key. Use “Make another version” for a new one; the same version always prints the same.
- Why are some of the answers right?
- If every answer were wrong, students would only look for an error. Mixing right and wrong answers makes them check each one, which is the skill that matters.
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