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Primary 3 Mathematics Fractions Quiz

Free P3 Maths Fractions quiz, Ox Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Mathematics From Real Exams Generated by Ox Alpha Updated 2026-08-27

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Questions

Primary 3 Mathematics Quiz - Fractions

Name: ______________________ Class: ____________ Date: ______________

Score: ____________ / 45 Duration: 50 minutes Total Marks: 45

Instructions

Answer all 20 questions.
Section A: Write the letter (A, B, C or D) of the correct answer in the brackets ( ).
Section B: Write your answers in the blanks provided.
Section C: Show your working clearly. Give your answers in the simplest form unless stated otherwise.
Do not use a calculator.
The marks for each question are shown in brackets [ ].

Section A: Multiple-Choice Questions (Questions 1–5) — 10 marks

Write the letter of the correct answer in the brackets. Each question carries 2 marks.

Question 1.

Look at the rectangle below. It is divided into 10 equal parts and 4 of the parts are shaded.

Image pending generation: diagram for Q1.

What fraction of the rectangle is shaded?

A. $\frac{4}{10}$ B. $\frac{10}{4}$ C. $\frac{4}{6}$ D. $\frac{6}{10}$

Answer: ____________ ( )

[2 marks]

Question 2.

Which one of the following fractions is equivalent to $\frac{2}{3}$ ?

A. $\frac{3}{4}$ B. $\frac{4}{6}$ C. $\frac{2}{6}$ D. $\frac{3}{5}$

Answer: ____________ ( )

[2 marks]

Question 3.

Which one of the following fractions is in its simplest form?

A. $\frac{4}{8}$ B. $\frac{3}{9}$ C. $\frac{5}{7}$ D. $\frac{6}{9}$

Answer: ____________ ( )

[2 marks]

Question 4.

The four strips below are all the same length. Which fraction is the greatest?

Image pending generation: diagram for Q4.

A. $\frac{1}{2}$ B. $\frac{1}{3}$ C. $\frac{1}{5}$ D. $\frac{1}{8}$

Answer: ____________ ( )

[2 marks]

Question 5.

Which one of the following fractions is greater than $\frac{1}{2}$ ?

A. $\frac{2}{5}$ B. $\frac{3}{8}$ C. $\frac{5}{8}$ D. $\frac{3}{7}$

Answer: ____________ ( )

There are 12 sweets in a jar. $\frac{1}{3}$ of the sweets are chocolate. How many chocolate sweets are there?

Answer: ____________

[2 marks]

Section C: Word Problems (Questions 16–20) — 15 marks

Show your working clearly. Each question carries 3 marks.

Question 16.

Mei Ling had a ribbon 1 m long. She used $\frac{3}{10}$ m of it to tie a box. What length of ribbon was left?

[3 marks]

Question 17.

A pizza is cut into 12 equal slices. Ali ate $\frac{1}{4}$ of the pizza. How many slices did he eat?

[3 marks]

Question 18.

Siti read $\frac{2}{5}$ of a book on Monday and $\frac{1}{5}$ of it on Tuesday. What fraction of the book did she read altogether?

[3 marks]

Question 19.

A jug contained $\frac{7}{8}$ ℓ of juice. Mr Tan poured out $\frac{3}{8}$ ℓ of juice. How much juice was left? Give your answer in its simplest form.

[3 marks]

Question 20.

There are 24 pupils in a class. $\frac{1}{2}$ of the pupils are girls. How many boys are there?

[3 marks]

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Answers

Primary 3 Mathematics Quiz - Fractions: Answer Key

Answer 1.

A. $\frac{4}{10}$ — 4 of the 10 equal parts are shaded. [2 marks]

Answer 2.

B. $\frac{4}{6}$ — multiply the numerator and denominator of $\frac{2}{3}$ by 2. [2 marks]

Answer 3.

C. $\frac{5}{7}$ — 5 and 7 have no common factor other than 1. [2 marks]

Answer 4.

A. $\frac{1}{2}$ — for equal wholes, the smaller the denominator, the greater the unit fraction. [2 marks]

Answer 5.

C. $\frac{5}{8}$ — 5 eighths is more than half (4 eighths); all others are less than half. [2 marks]

Answer 6.

9 — $\frac{3}{5} = \frac{9}{15}$ (multiply top and bottom by 3). [2 marks]

Answer 7.

$\frac{3}{8}$ , $\frac{1}{2}$ , $\frac{5}{8}$ [2 marks]

Answer 8.

$\frac{5}{7}$ [2 marks]

Answer 9.

$\frac{3}{9} = \frac{1}{3}$ [2 marks]

Answer 10.

$\frac{3}{4}$ [2 marks]

Answer 11.

$>$ — same numerator, so the fraction with the smaller denominator ( $\frac{3}{4}$ ) is greater. [2 marks]

Answer 12.

$\frac{5}{8}$ — 8 − 3 = 5 pieces left out of 8. [2 marks]

Answer 13.

6 [2 marks]

Answer 14.

1 — $\frac{5}{10} = \frac{1}{2}$ . [2 marks]

Answer 15.

4 chocolate sweets — $12 \div 3 = 4$ . [2 marks]

Answer 16.

$1\,\text{m} - \frac{3}{10}\,\text{m} = \frac{10}{10} - \frac{3}{10} = \frac{7}{10}\,\text{m}$ of ribbon left. [3 marks]

Answer 17.

$\frac{1}{4}$ of 12 slices = $12 \div 4 = 3$ slices. [3 marks]

Answer 18.

$\frac{2}{5} + \frac{1}{5} = \frac{3}{5}$ of the book. [3 marks]

Answer 19.

$\frac{7}{8} - \frac{3}{8} = \frac{4}{8} = \frac{1}{2}$ ℓ of juice left. [3 marks]

Answer 20.

Girls: $24 \div 2 = 12$ . Boys: $24 - 12 = 12$ boys. [3 marks]