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Equivalent Fractions — Doubling is a free printable Grade 3 maths worksheet on doubling both parts of a fraction, aligned to Common Core standard 3.NF.A.3. 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 1 of 25 · the same problems every time you open this link.

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One paper per pupil

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All 25 sets ask different questions.

Equivalent Fractions — Doubling

3.NF.A.3

NameDate

Fill in the missing number.

1.4/5 = ___/15
2.2/7 = ___/14
3.3/5 = ___/15
4.1/2 = ___/6
5.1/6 = ___/18
6.1/7 = 2/___
7.2/8 = 6/___
8.2/7 = 4/___
9.1/4 = 3/___
10.4/8 = 8/___
11.6/7 = ___/21
12.1/2 = 2/___

LessonPrint · 3.NF.A.3 · Set 1 · free to copy for classroom use

Answer key — Equivalent Fractions — Doubling

Set 1. Prints on its own sheet.

  1. 1.12
  2. 2.4
  3. 3.9
  4. 4.3
  5. 5.3
  6. 6.14
  7. 7.24
  8. 8.14
  9. 9.12
  10. 10.16
  11. 11.18
  12. 12.4

Questions about Equivalent Fractions — Doubling

What does the Equivalent Fractions — Doubling worksheet cover?

It practises doubling both parts of a fraction — 12 questions for Grade 3, all on Common Core 3.NF.A.3: Recognise equivalent fractions and compare fractions. The instruction to pupils is “Fill in the missing number”, and the answer key follows on the next sheet.

Which Common Core standard does Equivalent Fractions — Doubling practise?

CCSS.MATH.CONTENT.3.NF.A.3 — 3.NF.A.3, in the Number & Operations — Fractions domain for Grade 3. The published standard reads: “Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Equivalent Fractions — Doubling is written for Grade 3, typically ages 8-9. It is one of the sheets on 3.NF.A.3, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Equivalent Fractions — Doubling come with an answer key?

Yes. All 12 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Equivalent Fractions — Doubling can I print?

25 — one per pupil, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Equivalent Fractions — Doubling free to print and photocopy?

Yes. Equivalent Fractions — Doubling, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

Is there a lesson plan to teach 3.NF.A.3?

Yes — “Comparing Fractions by Size” is a 45-minute Grade 3 plan for 3.NF.A.3, timed section by section, with the misconceptions to expect and an exit ticket. Equivalent Fractions — Doubling is the practice that follows it.

More practice for 3.NF.A.3

Recognise equivalent fractions and compare fractions.

Teaching this next? Comparing Fractions by Size is the 45-minute plan for it, with the misconceptions to expect.

All Grade 3 worksheets

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