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3rd Math: Fractions practice questions and exam guide

150 multiple-choice questions, 75 flashcards and 10 scenario simulations, written to the Common Core State Standards blueprint. Every question carries a full rationale.

Last reviewed 2026-10-26 · CoStudy · how we write and review questions

  • 235 total items
  • 150 multiple choice
  • 75 flashcards
  • 10 simulations

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About the 3rd Math: Fractions exam

Common Core State Standards (CCSS) — Mathematics, Grade 3: Number & Operations — Fractions (3.NF.A.1-3a-d). Denominators 2, 3, 4, 6, 8. Public standards from corestandards.org.

CoStudy's 3rd Math: Fractions bank holds 235 items. Every multiple-choice question carries a written rationale explaining why the correct answer is correct and why each distractor is tempting but wrong, and the bank includes 10 scenario-based simulations.

Free 3rd Math: Fractions practice questions

A sample of 12 multiple-choice questions from the bank, with the full rationale shown.

Is 2/8 = 1/4?

  1. Only sometimes
  2. No
  3. Cannot tell
  4. Yes

Answer: D — Yes

D) Correct. B/C/A) wrong.

In 3/4, the bottom number (4) is called the:

  1. Numerator
  2. Denominator
  3. Divisor
  4. Sum

Answer: B — Denominator

Denominator = bottom (total parts). (A) is top; (C),(D) different.

Which of these fractions equals a whole? 3/3, 4/8, 6/6

  1. All three
  2. 4/8 only
  3. 3/3 and 6/6
  4. None

Answer: C — 3/3 and 6/6

C) Correct — anything a/a=1. B) that's 1/2. C/D) wrong.

Pizza has 6 slices. Ryan eats 1/3. Slices eaten?

  1. 2
  2. 3
  3. 6
  4. 1

Answer: A — 2

A) Correct — 1/3 of 6 = 2. B) 1/2. C) all. D) 1/6.

Which is bigger: 1/2 or 1/3?

  1. Cannot tell
  2. 1/3
  3. Equal
  4. 1/2

Answer: D — 1/2

D) Correct — same numerator, smaller denom = bigger piece. B) smaller. C/A) wrong.

A bar is split into 4 equal parts and 3 are shaded. What fraction?

  1. 4/3
  2. 1/4
  3. 3/4
  4. 1/3

Answer: C — 3/4

C) Correct — 3 shaded of 4 total. B) unshaded. A) reversed. D) wrong denom.

On a number line, is 3/4 between 0 and 1?

  1. No — before 0
  2. No — beyond 1
  3. Yes
  4. At 0

Answer: C — Yes

C) Correct — 3/4 is a proper fraction. B/C/D) wrong.

A candy bar with 8 pieces. 3 are eaten. What fraction remains?

  1. 3/5
  2. 3/8
  3. 8/5
  4. 5/8

Answer: D — 5/8

D) Correct — 8−3=5 remaining of 8. B) eaten. C/A) reversed.

Sara reads 3/8 of a book. Then 2/8 more. Total?

  1. 5/8
  2. 5/16
  3. 1/8
  4. 6/8

Answer: A — 5/8

A) Correct — 3/8 + 2/8 = 5/8. B) added denoms. C) subtracted. D) miscount.

Which is equivalent to 3/4?

  1. 3/8
  2. 6/8
  3. 1/4
  4. 4/3

Answer: B — 6/8

3/4 × 2/2 = 6/8. (A),(C),(D) wrong.

Which fraction is closer to 0 on a number line: 1/8 or 7/8?

  1. Same distance
  2. 7/8
  3. 1/8
  4. Depends on line

Answer: C — 1/8

C) Correct — 1/8 is near the 0 end. B) near 1. C/D) wrong.

Which fraction equals 3/1?

  1. 1/3
  2. 3
  3. 3/3
  4. 1

Answer: B — 3

B) Correct — 3 wholes. A) reversed. C) 1 whole. D) 1.

3rd Math: Fractions flashcards

6 sample cards from the 75 in the bank.

Is 8/8 equal to 1?

Yes! Any fraction where numerator = denominator equals 1.

5/6 means I have 5 of what unit fraction?

5 copies of 1/6.

Is 5/5 equal to 1?

Yes! 5/5 = 1 whole.

How can you find an equivalent fraction?

Multiply (or divide) BOTH the top and bottom by the same number. 1/2 × 3/3 = 3/6 (same value).

If 3 friends share a pizza equally, what fraction does each get?

1/3.

Which is greater: 2/6 or 4/6?

4/6.

Practise the full 3rd Math: Fractions bank

These samples are a small slice. The full bank runs flashcards, multiple choice and timed mock exams with per-chapter progress tracking, on the web and in the iOS app.

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3rd Math: Fractions — frequently asked

What is the 3rd Math: Fractions exam?

Common Core State Standards (CCSS) — Mathematics, Grade 3: Number & Operations — Fractions (3.NF.A.1-3a-d). Denominators 2, 3, 4, 6, 8. Public standards from corestandards.org.

How is CoStudy’s 3rd Math: Fractions bank organised?

It holds 235 items (150 multiple-choice, 75 flashcards, 10 simulations). Free samples on this page include the full rationale, with no account.

Does CoStudy replace the certifying body?

No. the certifying body owns the outline, the badge, and the sitting rules. This is independent practice with written rationales. We do not sell live items and we do not guarantee a pass.

Where do 3rd Math: Fractions fees, cut scores, and pass rates live?

On the certifying body’s site. CoStudy will not invent a sitting fee or a pass rate. If a table on this page lacks a citation, treat it as unverified.

Are these real 3rd Math: Fractions exam questions?

No. CoStudy does not have live items. The samples below are original practice written to the published outline, with rationales. Anyone selling “real exam dumps” is describing something you should not buy.

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