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Primary 6 PSLE Mathematics Money Quiz

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Primary 6 PSLE Mathematics AI Generated Generated by DeepSeek V4 Flash Sample 01 Updated 2026-08-17

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Questions

Primary 6 PSLE Mathematics Quiz - Money

Name: _________________________ Class: _________________________ Date: _________________________ Score: ________ / 50

Duration: 45 minutes Total Marks: 50

Instructions:

Answer all questions.
Show your working clearly for all questions. Marks may be awarded for correct working even if the final answer is wrong.
Write your answers in the spaces provided.
You may use a calculator unless stated otherwise.
The use of mathematical instruments is allowed.

Section A: Multiple-Choice Questions (5 × 2 marks = 10 marks)

Circle the correct answer for each question.

1. A shop sells a toy car for $12.50. During a sale, the shop gives a 20% discount. What is the sale price of the toy car?

A) $2.50
B) $9.50
C) $10.00
D) $15.00

Answer: __________

2. Mei Ling has $45. She spends 40% of her money on a book. How much money does she have left?

A) $18
B) $27
C) $30
D) $63

Answer: __________

3. A pencil costs $0.80 and a ruler costs $1.20. What is the total cost of 3 pencils and 2 rulers?

A) $3.60
B) $4.00
C) $4.80
D) $5.20

Answer: __________

4. A shopkeeper buys a bag for $25 and sells it for $35. What is the profit percentage?

A) 10%
B) 25%
C) 40%
D) 71.4%

Answer: __________

5. The total cost of 5 identical notebooks is $18.50. What is the cost of 8 such notebooks?

A) $3.70
B) $29.60
C) $30.00
D) $37.00

Answer: __________

Section B: Short-Answer Questions (5 × 3 marks = 15 marks)

Show your working clearly in the space provided.

6. A wallet costs $36. During a sale, the price is reduced by 15%. What is the new price of the wallet?

Answer: $__________

Working:

7. A shop sells a pair of shoes for $54. This price includes an 8% GST. What is the price of the shoes before GST?

Answer: $__________

Working:

8. A shopkeeper bought 12 mugs for $48. He sold each mug for $5.50. What was his total profit?

Answer: $__________

Working:

9. A cashier has some coins. The total value of the coins is $22.60. If there are 8 two-dollar coins, 6 fifty-cent coins, and the rest are twenty-cent coins, how many twenty-cent coins are there?

Answer: __________ twenty-cent coins

Working:

10. A shop sells a watch for $120. This price is 25% more than the cost price. What is the cost price of the watch?

Answer: $__________

Working:

Section C: Problem-Solving Questions (5 × 5 marks = 25 marks)

Show your working clearly and write your final answers in the boxes provided.

11. A shop has a sale: "Buy 2, Get 1 Free" on all T-shirts. A T-shirt costs $18.50. What is the minimum amount a customer needs to pay to get 7 T-shirts?

Answer: $__________

Working:

12. A shopkeeper bought 50 kg of rice at $2.40 per kg. He repacked the rice into bags of 2 kg each and sold each bag for $6.00. What was his total profit?

Answer: $__________

Working:

13. A shop sells a camera for $240 after giving a 20% discount. What was the original price of the camera?

Answer: $__________

Working:

14. A shopkeeper bought 40 apples for $20. He found that 5 apples were rotten and had to throw them away. He sold the remaining apples at $0.80 each. What was his total profit or loss? (State clearly whether it is a profit or a loss.)

Answer: __________

Working:

15. A shop sells a sofa at a discount of 30%. During a clearance sale, an additional 10% discount is given on the discounted price. If the final price of the sofa is $630, what was the original price?

Answer: $__________

Working:

Section D: Additional Problem-Solving Questions (5 × 5 marks = 25 marks)

Show your working clearly and write your final answers in the boxes provided.

16. A shop sells a book for $15. During a promotion, the shop offers a 10% discount on the first book and a 20% discount on the second book. What is the total cost of buying 2 books during the promotion?

Answer: $__________

Working:

17. A shopkeeper bought 200 oranges for $80. He sold 150 oranges at $0.60 each and the rest at $0.40 each. What was his total profit or loss? (State clearly whether it is a profit or a loss.)

Answer: __________

Working:

18. A shop sells a bag for $45. This price is 10% less than the original price. What was the original price of the bag?

Answer: $__________

Working:

19. A shopkeeper mixes 3 kg of nuts costing $8 per kg with 2 kg of nuts costing $12 per kg. He sells the mixture at $10 per kg. What is his profit or loss per kg of the mixture? (State clearly whether it is a profit or a loss.)

Answer: __________

Working:

20. A shop sells a television at a discount of 25%. The discounted price is $450. What is the original price of the television?

Answer: $__________

Working:

End of Quiz

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Answers

Answer Key: Primary 6 PSLE Mathematics Quiz - Money

Section A: Multiple-Choice Questions (5 × 2 marks = 10 marks)

1. C) $10.00

Marks: 2

Explanation: To find the sale price after a discount, we first find the discount amount and then subtract it from the original price.

Find the discount amount: 20% of $12.50 = 20/100 × 12.50 = $2.50
Subtract the discount from the original price: $12.50 - $2.50 = $10.00

Common mistake: Some students may subtract 20% incorrectly or find 20% of the wrong amount. Always ensure the percentage is calculated on the original price.

2. B) $27

Marks: 2

Explanation: We need to find the amount spent and then subtract it from the total.

Find the amount spent: 40% of $45 = 40/100 × 45 = $18
Find the amount left: $45 - $18 = $27

Alternative method: If 40% is spent, then 60% is left. 60% of $45 = 60/100 × 45 = $27.

3. C) $4.80

Marks: 2

Explanation: We need to find the cost of each item separately and then add them together.

Cost of 3 pencils: 3 × $0.80 = $2.40
Cost of 2 rulers: 2 × $1.20 = $2.40
Total cost: $2.40 + $2.40 = $4.80

4. C) 40%

Marks: 2

Explanation: Profit percentage is calculated as (Profit / Cost Price) × 100%.

Find the profit: Selling Price - Cost Price = $35 - $25 = $10
Find the profit percentage: (10 / 25) × 100% = 40%

Common mistake: Students may calculate profit percentage based on the selling price instead of the cost price. The formula is always based on the cost price.

5. B) $29.60

Marks: 2

Explanation: This is a unitary method problem. We first find the cost of one notebook, then multiply to find the cost of 8.

Cost of 1 notebook: $18.50 ÷ 5 = $3.70
Cost of 8 notebooks: 8 × $3.70 = $29.60

Section B: Short-Answer Questions (5 × 3 marks = 15 marks)

6. $30.60

Marks: 3 (1 mark for discount amount, 1 mark for correct method, 1 mark for final answer)

Explanation:

Find the discount amount: 15% of $36 = 15/100 × 36 = $5.40
Subtract the discount from the original price: $36 - $5.40 = $30.60

Teaching note: A discount is a reduction from the original price. The new price is always less than the original price.

7. $50

Marks: 3 (1 mark for recognising the relationship, 1 mark for correct method, 1 mark for final answer)

Explanation: The price of $54 includes 8% GST. This means the selling price is 108% of the price before GST.

Let the price before GST be $x$ .
108% of $x$ = $54
$x$ = 54 ÷ 108/100 = 54 × 100/108 = $50

Common mistake: Students may incorrectly subtract 8% of $54 from $54. The 8% GST is calculated on the price before GST, not on the final price.

8. $18

Marks: 3 (1 mark for cost per mug, 1 mark for total selling price, 1 mark for profit)

Explanation:

Find the cost price of each mug: $48 ÷ 12 = $4
Find the total selling price: 12 × $5.50 = $66
Find the profit: $66 - $48 = $18

Alternative method:

Find the profit per mug: $5.50 - $4.00 = $1.50
Total profit: 12 × $1.50 = $18

9. 18 twenty-cent coins

Marks: 3 (1 mark for value of $2 coins, 1 mark for value of 50-cent coins, 1 mark for final answer)

Explanation:

Value of 8 two-dollar coins: 8 × $2.00 = $16.00
Value of 6 fifty-cent coins: 6 × $0.50 = $3.00
Total value of these coins: $16.00 + $3.00 = $19.00
Value of twenty-cent coins: $22.60 - $19.00 = $3.60
Number of twenty-cent coins: $3.60 ÷ $0.20 = 18

Teaching note: Work step by step: find the value of the known coins first, subtract from the total to find the value of the unknown coins, then divide by the value of one twenty-cent coin.

10. $96

Marks: 3 (1 mark for recognising the relationship, 1 mark for correct method, 1 mark for final answer)

Explanation: The selling price of $120 is 25% more than the cost price. This means the selling price is 125% of the cost price.

Let the cost price be $x$ .
125% of $x$ = $120
$x$ = 120 ÷ 125/100 = 120 × 100/125 = $96

Common mistake: Students may subtract 25% of $120 from $120. The 25% is calculated on the cost price, not on the selling price.

Section C: Problem-Solving Questions (5 × 5 marks = 25 marks)

11. $92.50

Marks: 5 (1 mark for identifying the pattern, 2 marks for correct grouping, 1 mark for calculation, 1 mark for final answer)

Explanation: The "Buy 2, Get 1 Free" offer means for every 2 T-shirts bought, 1 is free. This means groups of 3 T-shirts cost the price of 2.

For 7 T-shirts, we can form groups of 3: 7 ÷ 3 = 2 groups with 1 T-shirt remaining.
For 2 groups of 3 T-shirts, the customer pays for 2 × 2 = 4 T-shirts.
The remaining 1 T-shirt must be paid for.
Total T-shirts to pay for: 4 + 1 = 5
Total cost: 5 × $18.50 = $92.50

Teaching note: The key is to recognise that every group of 3 T-shirts only costs the price of 2. The remaining T-shirts (1 in this case) must be paid for at full price.

12. $30

Marks: 5 (1 mark for total cost, 1 mark for number of bags, 1 mark for total selling price, 1 mark for profit calculation, 1 mark for final answer)

Explanation:

Total cost of rice: 50 × $2.40 = $120
Number of bags: 50 kg ÷ 2 kg = 25 bags
Total selling price: 25 × $6.00 = $150
Total profit: $150 - $120 = $30

Teaching note: This problem requires multiple steps: finding the total cost, determining the number of bags, calculating the total revenue, and then finding the profit.

13. $300

Marks: 5 (1 mark for recognising the relationship, 2 marks for correct method, 1 mark for calculation, 1 mark for final answer)

Explanation: The selling price of $240 is after a 20% discount. This means the selling price is 80% of the original price.

Let the original price be $x$ .
80% of $x$ = $240
$x$ = 240 ÷ 80/100 = 240 × 100/80 = $300

Common mistake: Students may incorrectly add 20% of $240 to $240. The 20% discount is calculated on the original price, not on the discounted price.

14. $8 profit

Marks: 5 (1 mark for cost per apple, 1 mark for number of apples sold, 1 mark for total selling price, 1 mark for profit/loss calculation, 1 mark for final answer with correct label)

Explanation:

Cost price of 40 apples: $20
Number of apples sold: 40 - 5 = 35 apples
Total selling price: 35 × $0.80 = $28
Profit: $28 - $20 = $8

Since the selling price is more than the cost price, it is a profit of $8.

Teaching note: The rotten apples are a loss, but we calculate the profit based on the total cost and total revenue. The cost of the rotten apples is already included in the total cost.

15. $1000

Marks: 5 (1 mark for recognising the first discount, 1 mark for recognising the second discount, 2 marks for correct method, 1 mark for final answer)

Explanation: Let the original price be $x$ .

After 30% discount, the price is 70% of $x$ = 0.7 $x$ .
After an additional 10% discount on the discounted price, the final price is 90% of 0.7 $x$ = 0.9 × 0.7 $x$ = 0.63 $x$ .
0.63 $x$ = $630
$x$ = 630 ÷ 0.63 = $1000

Common mistake: Students may incorrectly add the discounts (30% + 10% = 40%) and then find the original price. The second discount is applied to the already discounted price, not the original price.

Section D: Additional Problem-Solving Questions (5 × 5 marks = 25 marks)

16. $25.50

Marks: 5 (1 mark for first book discount, 1 mark for first book price, 1 mark for second book discount, 1 mark for second book price, 1 mark for total)

Explanation:

First book: 10% discount on $15 = 10/100 × 15 = $1.50 discount. Price = $15 - $1.50 = $13.50
Second book: 20% discount on $15 = 20/100 × 15 = $3.00 discount. Price = $15 - $3.00 = $12.00
Total cost: $13.50 + $12.00 = $25.50

Teaching note: The discounts are applied separately to each book. The first book gets a 10% discount, and the second book gets a 20% discount.

17. $10 profit

Marks: 5 (1 mark for total cost, 1 mark for revenue from 150 oranges, 1 mark for revenue from remaining oranges, 1 mark for total revenue, 1 mark for profit/loss with label)

Explanation:

Total cost: $80
Revenue from 150 oranges: 150 × $0.60 = $90
Remaining oranges: 200 - 150 = 50 oranges
Revenue from 50 oranges: 50 × $0.40 = $20
Total revenue: $90 + $20 = $110
Profit: $110 - $80 = $10

Since total revenue is more than total cost, it is a profit of $10.

18. $50

Marks: 5 (1 mark for recognising the relationship, 2 marks for correct method, 1 mark for calculation, 1 mark for final answer)

Explanation: The selling price of $45 is 10% less than the original price. This means the selling price is 90% of the original price.

Let the original price be $x$ .
90% of $x$ = $45
$x$ = 45 ÷ 90/100 = 45 × 100/90 = $50

Common mistake: Students may add 10% of $45 to $45. The 10% is calculated on the original price, not on the selling price.

19. $0.40 profit per kg

Marks: 5 (1 mark for total cost of nuts, 1 mark for total weight, 1 mark for cost per kg of mixture, 1 mark for profit per kg, 1 mark for final answer with label)

Explanation:

Total cost of nuts: (3 × $8) + (2 × $12) = $24 + $24 = $48
Total weight: 3 kg + 2 kg = 5 kg
Cost per kg of mixture: $48 ÷ 5 = $9.60
Selling price per kg: $10.00
Profit per kg: $10.00 - $9.60 = $0.40

Since the selling price per kg is more than the cost per kg, it is a profit of $0.40 per kg.

Teaching note: To find the profit per kg, first find the total cost and total weight, then find the cost per kg, and finally subtract from the selling price per kg.

20. $600

Marks: 5 (1 mark for recognising the relationship, 2 marks for correct method, 1 mark for calculation, 1 mark for final answer)

Explanation: The discounted price of $450 is after a 25% discount. This means the discounted price is 75% of the original price.

Let the original price be $x$ .
75% of $x$ = $450
$x$ = 450 ÷ 75/100 = 450 × 100/75 = $600

Common mistake: Students may add 25% of $450 to $450. The 25% discount is calculated on the original price, not on the discounted price.

Questions

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Answers

Answer Key: Primary 6 PSLE Mathematics Quiz - Money

Section A: Multiple-Choice Questions (5 × 2 marks = 10 marks)

1. C) $10.00

2. B) $27

3. C) $4.80

4. C) 40%

5. B) $29.60

Section B: Short-Answer Questions (5 × 3 marks = 15 marks)

6. $30.60

7. $50

8. $18

9. 18 twenty-cent coins

10. $96

Section C: Problem-Solving Questions (5 × 5 marks = 25 marks)

11. $92.50

12. $30

13. $300

14. $8 profit

15. $1000

Section D: Additional Problem-Solving Questions (5 × 5 marks = 25 marks)

16. $25.50

17. $10 profit

18. $50

19. $0.40 profit per kg

20. $600

End of Answer Key