Skip to content
LessonPrint

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

Next setLesson plan

One paper per pupil

12345678910111213141516171819202122232425

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.Omar worked out 19 × 16 = 133. What is the right answer?
2.Aisha worked out 22 × 91 = 220. What is the right answer?
3.Ravi worked out 81 × 21 = 243. What is the right answer?
4.Elsie worked out 31 × 81 = 279. What is the right answer?
5.Elsie worked out 85 × 45 = 765. What is the right answer?
6.Ravi worked out 46 × 86 = 644. What is the right answer?
7.Ama worked out 73 × 35 = 584. What is the right answer?
8.Freya worked out 45 × 43 = 315. What is the right answer?

LessonPrint · 5.NBT.B.5 · Set 11 · free to copy for classroom use

Answer key — Find the Mistake — Two-Digit Multiplication

Set 11. Prints on its own sheet.

  1. 1.304
  2. 2.2002
  3. 3.1701
  4. 4.2511
  5. 5.3825
  6. 6.3956
  7. 7.2555
  8. 8.1935

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.