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Equivalent Fractions — Missing Numerator is a free printable Grade 4 maths worksheet on the unknown on the top, aligned to Common Core standard 4.NF.A.1. 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 14 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.

Equivalent Fractions — Missing Numerator

4.NF.A.1

NameDate

Fill in the missing number.

1.2/3 = ___/12
2.5/6 = ___/18
3.4/6 = ___/12
4.1/6 = ___/12
5.1/4 = ___/16
6.2/4 = ___/16
7.1/3 = ___/6
8.6/7 = ___/14
9.5/8 = ___/16
10.6/8 = ___/16
11.2/7 = ___/28
12.3/5 = ___/10

LessonPrint · 4.NF.A.1 · Set 14 · free to copy for classroom use

Answer key — Equivalent Fractions — Missing Numerator

Set 14. Prints on its own sheet.

  1. 1.8
  2. 2.15
  3. 3.8
  4. 4.2
  5. 5.4
  6. 6.8
  7. 7.2
  8. 8.12
  9. 9.10
  10. 10.12
  11. 11.8
  12. 12.6

More practice for 4.NF.A.1

Understand why equivalent fractions are equal.

Teaching this next? Why Equivalent Fractions Are Equal is the 45-minute plan for it, with the misconceptions to expect.

All Grade 4 worksheets

Last reviewed 2026-09-05. Aligned to 4.NF.A.1 of the Common Core State Standards for mathematics.