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Find the Mistake — Two-Digit Multiplication is a free printable Grade 5 maths worksheet on catching a tens digit multiplied as if it were ones, aligned to Common Core standard 5.NBT.B.5. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 15 of 25 · the same problems every time you open this link.

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One paper per pupil

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Find the Mistake — Two-Digit Multiplication

5.NBT.B.5

NameDate

Find the mistake and write the right answer.

1.Elsie worked out 27 × 87 = 405. What is the right answer?
2.Aisha worked out 37 × 88 = 592. What is the right answer?
3.Priya worked out 59 × 42 = 354. What is the right answer?
4.Dilan worked out 92 × 77 = 1288. What is the right answer?
5.Ravi worked out 20 × 43 = 140. What is the right answer?
6.Luis worked out 54 × 85 = 702. What is the right answer?
7.Freya worked out 51 × 78 = 765. What is the right answer?
8.Aisha worked out 72 × 82 = 720. What is the right answer?

LessonPrint · 5.NBT.B.5 · Set 15 · free to copy for classroom use

Answer key — Find the Mistake — Two-Digit Multiplication

Set 15. Prints on its own sheet.

  1. 1.2349
  2. 2.3256
  3. 3.2478
  4. 4.7084
  5. 5.860
  6. 6.4590
  7. 7.3978
  8. 8.5904

More practice for 5.NBT.B.5

Multiply large numbers using the standard method.

Teaching this next? Multiplying Multi-Digit Numbers is the 50-minute plan for it, with the misconceptions to expect.

All Grade 5 worksheets

Last reviewed 2026-09-05. Aligned to 5.NBT.B.5 of the Common Core State Standards for Mathematics.