Skip to content
LessonPrint

Equivalent Fractions — Missing Numerator is a free printable Grade 4 math worksheet on the unknown on the top, scaled by three, four or five, aligned to Common Core standard 4.NF.A.1. It prints 4 questions with an answer key on its own sheet of paper, in 25 versions, 19 of them with different questions, so no two students 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.

Next setLesson plan

One paper per student

12345678910111213141516171819202122232425

Set 1 has all 25 in a single PDF. 19 of these 25 sets ask different questions — this skill does not have 25 questions to give. The rest reorder them, so no two students have the same paper in front of them.

Equivalent Fractions — Missing Numerator

4.NF.A.1

NameDate

Fill in the missing number.

1.2/4 = ___/12
2.1/3 = ___/12
3.1/2 = ___/6
4.1/2 = ___/8

LessonPrint · 4.NF.A.1 · Set 13 · free to copy for classroom use

Answer key — Equivalent Fractions — Missing Numerator

Set 13. Prints on its own sheet.

  1. 1.6
  2. 2.4
  3. 3.3
  4. 4.4

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.