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Missing Number — Mixed is a free printable Grade 3 maths worksheet on the unknown anywhere in either operation, aligned to Common Core standard 3.OA.A.4. It prints 12 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 13 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.

Missing Number — Mixed

3.OA.A.4

NameDate

Work out each answer.

1.6 × ___ = 12
2.2 × ___ = 8
3.___ × 7 = 21
4.___ × 5 = 10
5.___ × 8 = 40
6.6 × ___ = 42
7.40 ÷ ___ = 8
8.24 ÷ ___ = 4
9.27 ÷ ___ = 9
10.18 ÷ ___ = 3
11.18 ÷ ___ = 9
12.28 ÷ ___ = 7

LessonPrint · 3.OA.A.4 · Set 13 · free to copy for classroom use

Answer key — Missing Number — Mixed

Set 13. Prints on its own sheet.

  1. 1.2
  2. 2.4
  3. 3.3
  4. 4.2
  5. 5.5
  6. 6.7
  7. 7.5
  8. 8.6
  9. 9.3
  10. 10.6
  11. 11.2
  12. 12.4

Last reviewed 2026-09-05. Aligned to 3.OA.A.4 of the Common Core State Standards for mathematics.