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Primary 6 PSLE Mathematics Fractions Quiz
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Questions
Primary 6 PSLE Mathematics Quiz - Fractions
Name: ____________________
Class: ____________________
Date: ____________________
Score: ________ / 40
Duration: 50 minutes
Total Marks: 40
Instructions:
- Answer ALL questions.
- Show your working clearly in the space provided.
- Write your final answer in the answer space.
- Do not use a calculator.
- Diagrams are not drawn to scale unless stated.
Section A: Short Answer (10 × 2 marks = 20 marks)
Questions 1–5: Simplify or compute. Write your answer in the simplest form.
1.
Evaluate: 3/4 + 2/5
Answer: ______________
2.
Evaluate: 7/8 − 1/3
Answer: ______________
3.
Evaluate: 5/6 × 9/10
Answer: ______________
4.
Evaluate: 2/3 ÷ 4/9
Answer: ______________
5.
Evaluate: 1/2 + 3/4 × 2/5
Answer: ______________
Questions 6–10: Word problems. Show your working and write your answer in the answer space.
6.
Maya had 240 stickers. She gave away 1/3 of them to her sister. How many stickers did she give away?
Answer: ______________
7.
A tank was filled with 360 litres of water. 3/8 of the water was used for gardening. How many litres of water were used?
Answer: ______________
8.
A ribbon is 5/6 m long. 1/4 of the ribbon is cut off. What is the length of the remaining ribbon?
Answer: ______________
9.
A baker used 2/5 of a bag of flour in the morning and 1/3 of the same bag in the afternoon. What fraction of the bag of flour was used altogether?
Answer: ______________
10.
Sam spent 3/7 of his money on a book and had $28 left. How much money did Sam have at first?
Answer: ______________
Section B: Structured Questions (5 × 3 marks = 15 marks)
Show all working clearly. Answer in the space provided.
11.
Ali, Ben, and Chris shared some sweets. Ali received 1/4 of the sweets. Ben received 2/5 of the sweets. The rest went to Chris.
(a) What fraction of the sweets did Chris receive?
Answer (a): ______________
(b) If Chris received 21 sweets, how many sweets were there altogether?
Answer (b): ______________
12.
A fruit seller had some apples. He sold 2/7 of the apples in the morning and 3/5 of the remaining apples in the afternoon. He had 60 apples left.
(a) What fraction of the apples remained after the morning?
Answer (a): ______________
(b) What fraction of the original apples did he sell in the afternoon?
Answer (b): ______________
(c) How many apples did he have at first?
Answer (c): ______________
13.
Priya spent 1/3 of her savings on a dress and 1/2 of the remainder on a pair of shoes. She had $45 left.
(a) What fraction of her savings was spent on the shoes?
Answer (a): ______________
(b) What fraction of her savings was left?
Answer (b): ______________
(c) How much did Priya have in savings at first?
Answer (c): ______________
14.
In a school, 3/8 of the pupils are boys. There are 120 more girls than boys.
(a) What fraction of the pupils are girls?
Answer (a): ______________
(b) What fraction represents the difference between the number of girls and boys?
Answer (b): ______________
(c) How many pupils are there in the school?
Answer (c): ______________
15.
A box contains red and blue marbles. 5/12 of the marbles are red. There are 35 more blue marbles than red marbles.
(a) What fraction of the marbles are blue?
Answer (a): ______________
(b) What fraction represents the difference between the number of blue and red marbles?
Answer (b): ______________
(c) How many marbles are there in the box altogether?
Answer (c): ______________
Section C: Problem-Solving (5 × 1 mark = 5 marks)
These questions require multi-step reasoning. Show all working clearly.
16.
At a party, 2/5 of the guests were children. 3/4 of the adults were women. There were 36 men at the party.
(a) What fraction of the guests were adults?
Answer (a): ______________
(b) What fraction of the adults were men?
Answer (b): ______________
(c) What fraction of all the guests were men?
Answer (c): ______________
(d) How many guests were there at the party altogether?
Answer (d): ______________
17.
A tank was 5/6 full of water. After 30 litres of water were used, the tank was 1/3 full.
(a) What fraction of the tank's capacity was used?
Answer (a): ______________
(b) What is the full capacity of the tank?
Answer (b): ______________
(c) How much water was in the tank at first?
Answer (c): ______________
(d) How much water was in the tank after 30 litres were used?
Answer (d): ______________
18.
Lina read 2/5 of a book on Monday and 1/2 of the remaining pages on Tuesday. She had 60 pages left to read.
(a) What fraction of the book remained after Monday?
Answer (a): ______________
(b) What fraction of the book did she read on Tuesday?
Answer (b): ______________
(c) What fraction of the book was left after Tuesday?
Answer (c): ______________
(d) How many pages were in the book altogether?
Answer (d): ______________
19.
A shopkeeper had 240 oranges. He sold 3/8 of them on Monday and 1/3 of the remainder on Tuesday.
(a) What fraction of the oranges remained after Monday?
Answer (a): ______________
(b) What fraction of the original oranges did he sell on Tuesday?
Answer (b): ______________
(c) How many oranges did he sell on Tuesday?
Answer (c): ______________
(d) How many oranges did he have left after Tuesday?
Answer (d): ______________
20.
Tom and Jerry shared some money. Tom received 3/7 of the money. Jerry received $24 more than Tom.
(a) What fraction of the money did Jerry receive?
Answer (a): ______________
(b) What fraction represents the difference between Jerry's share and Tom's share?
Answer (b): ______________
(c) How much money did Tom receive?
Answer (c): ______________
(d) How much money did they share altogether?
Answer (d): ______________
End of Quiz
Answers
Primary 6 PSLE Mathematics Quiz - Fractions
Answer Key
Section A: Short Answer (10 × 2 marks = 20 marks)
1.
3/4 + 2/5
= 15/20 + 8/20
= 23/20
= 1 3/20
Answer: 1 3/20
Marking: 1 mark for correct common denominator, 1 mark for correct final answer.
2.
7/8 − 1/3
= 21/24 − 8/24
= 13/24
Answer: 13/24
Marking: 1 mark for correct common denominator, 1 mark for correct final answer.
3.
5/6 × 9/10
= (5 × 9) / (6 × 10)
= 45/60
= 3/4
Answer: 3/4
Marking: 1 mark for correct multiplication, 1 mark for simplification to lowest terms.
4.
2/3 ÷ 4/9
= 2/3 × 9/4
= (2 × 9) / (3 × 4)
= 18/12
= 1 1/2 (or 3/2)
Answer: 1 1/2
Marking: 1 mark for converting to multiplication by reciprocal, 1 mark for correct final answer.
5.
1/2 + 3/4 × 2/5
= 1/2 + (3 × 2)/(4 × 5)
= 1/2 + 6/20
= 1/2 + 3/10
= 5/10 + 3/10
= 8/10
= 4/5
Answer: 4/5
Marking: 1 mark for correct order of operations (multiply first), 1 mark for correct final answer. Common mistake: adding before multiplying.
6.
1/3 × 240 = 80
Answer: 80 stickers
Marking: 1 mark for correct method, 1 mark for correct answer with unit.
7.
3/8 × 360
= (3 × 360) / 8
= 1080 / 8
= 135
Answer: 135 litres
Marking: 1 mark for correct method, 1 mark for correct answer with unit.
8.
Fraction remaining = 1 − 1/4 = 3/4
Length remaining = 3/4 × 5/6
= 15/24
= 5/8 m
Answer: 5/8 m
Marking: 1 mark for finding fraction remaining, 1 mark for correct calculation and answer.
9.
2/5 + 1/3
= 6/15 + 5/15
= 11/15
Answer: 11/15
Marking: 1 mark for correct common denominator, 1 mark for correct answer.
10.
Fraction left = 1 − 3/7 = 4/7
4/7 of money = 28 ÷ 4/7
= 49**
Answer: $49
Marking: 1 mark for finding fraction left, 1 mark for correct answer. Common mistake: multiplying 28 by 4/7 instead of dividing.
Section B: Structured Questions (5 × 3 marks = 15 marks)
11.
(a) Fraction Chris received:
1 − 1/4 − 2/5
= 1 − 5/20 − 8/20
= 1 − 13/20
= 7/20
Answer (a): 7/20
(b) 7/20 of total = 21
1/20 of total = 21 ÷ 7 = 3
Total = 3 × 20 = 60
Answer (b): 60 sweets
Marking: 1 mark for (a), 2 marks for (b) — 1 for method, 1 for correct answer.
12.
(a) Fraction remaining after morning:
1 − 2/7 = 5/7
Answer (a): 5/7
(b) Fraction sold in afternoon:
3/5 × 5/7 = 3/7
Answer (b): 3/7
(c) Fraction left after afternoon:
5/7 − 3/7 = 2/7
2/7 of total = 60
1/7 of total = 30
Total = 30 × 7 = 210
Answer (c): 210 apples
Marking: 1 mark each for (a), (b), and (c). For (c), award 1 mark for finding fraction left and 1 mark for correct final answer.
13.
(a) Fraction spent on shoes:
Remainder after dress = 1 − 1/3 = 2/3
Shoes = 1/2 × 2/3 = 1/3
Answer (a): 1/3
(b) Fraction left:
1 − 1/3 − 1/3 = 1/3
Answer (b): 1/3
(c) 1/3 of savings = 45 × 3 = $135
Answer (c): $135
Marking: 1 mark each for (a), (b), and (c).
14.
(a) Fraction of girls:
1 − 3/8 = 5/8
Answer (a): 5/8
(b) Difference (girls − boys):
5/8 − 3/8 = 2/8 = 1/4
Answer (b): 1/4
(c) 1/4 of total = 120
Total = 120 × 4 = 480
Answer (c): 480 pupils
Marking: 1 mark each for (a), (b), and (c).
15.
(a) Fraction of blue marbles:
1 − 5/12 = 7/12
Answer (a): 7/12
(b) Difference (blue − red):
7/12 − 5/12 = 2/12 = 1/6
Answer (b): 1/6
(c) 1/6 of total = 35
Total = 35 × 6 = 210
Answer (c): 210 marbles
Marking: 1 mark each for (a), (b), and (c).
Section C: Problem-Solving (5 × 1 mark = 5 marks)
16.
(a) Fraction of adults:
1 − 2/5 = 3/5
Answer (a): 3/5
(b) Fraction of adults who were men:
1 − 3/4 = 1/4
Answer (b): 1/4
(c) Fraction of all guests who were men:
1/4 × 3/5 = 3/20
Answer (c): 3/20
(d) 3/20 of total = 36
1/20 of total = 12
Total = 12 × 20 = 240
Answer (d): 240 guests
Marking: 1 mark each for (a), (b), (c), and (d). Award method marks if working is shown even if final answer is wrong.
17.
(a) Fraction used:
5/6 − 1/3
= 5/6 − 2/6
= 3/6
= 1/2
Answer (a): 1/2
(b) 1/2 of capacity = 30 litres
Full capacity = 30 × 2 = 60 litres
Answer (b): 60 litres
(c) Water at first:
5/6 × 60 = 50 litres
Answer (c): 50 litres
(d) Water after:
1/3 × 60 = 20 litres
(Or: 50 − 30 = 20 litres)
Answer (d): 20 litres
Marking: 1 mark each for (a), (b), (c), and (d).
18.
(a) Fraction remaining after Monday:
1 − 2/5 = 3/5
Answer (a): 3/5
(b) Fraction read on Tuesday:
1/2 × 3/5 = 3/10
Answer (b): 3/10
(c) Fraction left after Tuesday:
3/5 − 3/10
= 6/10 − 3/10
= 3/10
Answer (c): 3/10
(d) 3/10 of total = 60
1/10 of total = 60 ÷ 3 = 20
Total = 20 × 10 = 200
Answer (d): 200 pages
Marking: 1 mark each for (a), (b), (c), and (d).
19.
(a) Fraction remaining after Monday:
1 − 3/8 = 5/8
Answer (a): 5/8
(b) Fraction sold on Tuesday:
1/3 × 5/8 = 5/24
Answer (b): 5/24
(c) Oranges sold on Tuesday:
5/24 × 240
= (5 × 240) / 24
= 1200 / 24
= 50
Answer (c): 50 oranges
(d) Oranges left after Tuesday:
240 − (sold Monday + sold Tuesday)
Sold Monday: 3/8 × 240 = 90
Total sold: 90 + 50 = 140
Left: 240 − 140 = 100
Answer (d): 100 oranges
Marking: 1 mark each for (a), (b), (c), and (d).
20.
(a) Fraction Jerry received:
1 − 3/7 = 4/7
Answer (a): 4/7
(b) Difference (Jerry − Tom):
4/7 − 3/7 = 1/7
Answer (b): 1/7
(c) 1/7 of total = 72**
Answer (c): $72
(d) Total shared:
7 × 24 = $168
Answer (d): $168
Marking: 1 mark each for (a), (b), (c), and (d).
End of Answer Key