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Primary 4 Mathematics Money Quiz

Free P4 Maths Money quiz, AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 4 Mathematics AI Generated Generated by DeepSeek V4 Flash Sample 03 Updated 2026-08-17

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Questions

Primary 4 Mathematics Quiz - Money

Name: ________________________________________ Class: ____________ Date: ____________

Score: ________ / 40

Duration: 40 minutes

Total Marks: 40

Instructions:

This quiz has 20 questions. 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.

Section A: Multiple-Choice Questions (Questions 1 to 5)

Choose the correct answer and write its letter (A, B, C or D) in the bracket provided. Each question carries 1 mark.

1. A pencil costs $1.20. A ruler costs$ 0.85. What is the total cost of the pencil and the ruler? (A) $1.95 (B)$ 2.05 (C) $2.15 (D)$ 2.25

Answer: (   )

2. Mei Ling has a $10 note. She buys a book for$ 6.45. How much change does she receive? (A) $3.45 (B)$ 3.55 (C) $4.45 (D)$ 4.55

Answer: (   )

3. A packet of biscuits costs $2.50. What is the cost of 4 such packets? (A)$ 8.00 (B) $8.50 (C)$ 10.00 (D) $10.50

Answer: (   )

4. Which of the following shows the correct way to write eight dollars and five cents in decimal form? (A) $8.5 (B)$ 8.05 (C) $8.50 (D)$ 8.005

Answer: (   )

5. A drink costs $1.80. A sandwich costs$ 3.50. How much more does the sandwich cost than the drink? (A) $1.60 (B)$ 1.70 (C) $2.30 (D)$ 5.30

Answer: (   )

Section B: Short-Answer Questions (Questions 6 to 15)

Write your answer in the space provided. Show your working. Each question carries 2 marks.

6. Ali bought a toy car for $12.50 and a toy plane for$ 8.75. How much did he spend in total?

Answer: $____________

Working:

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7. Mrs Tan had $50. She spent$ 23.80 on groceries. How much money did she have left?

Answer: $____________

Working:

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8. A bag of rice costs $15.60. A bag of flour costs$ 8.90. What is the difference in cost between the bag of rice and the bag of flour?

Answer: $____________

Working:

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9. Siti wants to buy 5 identical erasers. Each eraser costs $0.65. How much does she need to pay?

Answer: $____________

Working:

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10. A box of 12 pens costs $9.60. What is the cost of 1 pen?

Answer: $____________

Working:

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11. Raju had $20. He bought a book for$ 7.50 and a pen for $2.80. How much money does he have left?

Answer: $____________

Working:

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12. A piece of ribbon costs $1.20 per metre. What is the cost of 3.5 metres of ribbon?

Answer: $____________

Working:

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13. Mr Lim has $100. He wants to buy 6 chairs. Each chair costs$ 15.90. Does he have enough money? Show your working.

Answer: ________ (Yes / No)

Working:

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14. A pack of 6 cans of soft drinks costs $4.50. What is the cost of 1 can of soft drink?

Answer: $____________

Working:

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15. A wallet costs $24.50. A belt costs$ 15.80. What is the total cost of the wallet and the belt?

Answer: $____________

Working:

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Section C: Problem-Solving Questions (Questions 16 to 20)

Read each question carefully. Show your working clearly. Each question carries 3 marks.

16. A fruit seller had $85. He bought 5 boxes of apples. Each box of apples cost$ 12.60. How much money did he have left?

Answer: $____________

Working:

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17. A shop sells a toy for $18.50. During a sale, the shop gives a discount of$ 4.80. What is the sale price of the toy? If a customer pays with a $20 note, how much change will she receive?

Answer: Sale price: $____________
        Change: $____________

Working:

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18. A school is organising a field trip. The bus rental costs $240. Each student pays$ 6.50 for the bus. If 35 students go on the trip, will the total amount collected be enough to cover the bus rental? How much more or less money is needed?

Answer: ________ (Yes / No)
        Amount needed: $____________

Working:

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19. A baker uses 2.5 kg of flour to make a batch of bread. Each kg of flour costs $1.80. He sells each loaf of bread for$ 3.50. If he makes 10 loaves from one batch, how much profit does he make from selling all 10 loaves? (Profit = Selling Price - Cost Price)

Answer: $____________

Working:

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20. The table below shows the prices of items at a stationery shop.

Item	Price
Notebook	$2.40
Pen	$1.50
Eraser	$0.80
Pencil	$0.60

(a) What is the total cost of 2 notebooks and 3 pens? [1 mark]
(b) Ben has $10. He wants to buy 1 notebook, 2 pens, and 3 erasers. Does he have enough money? Explain your answer. [2 marks]

Answer (a): $____________

Answer (b): ________ (Yes / No)

Explanation:

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Answers

Primary 4 Mathematics Quiz - Money (Answer Key)

Total Marks: 40

Section A: Multiple-Choice Questions (Questions 1 to 5)

Each question carries 1 mark.

1. **(B) $2.05** - **Explanation:** To find the total cost, we add the cost of the pencil and the ruler.$ 1.20 + $0.85 =$ 2.05. When adding decimals, it is important to align the decimal points. - Common Mistake: Students might forget to carry over the 1 from the cents column, leading to $2.05 being incorrectly calculated as$ 1.95.

2. **(B) $3.55** - **Explanation:** Change is the amount of money returned after paying. We subtract the cost of the book from the amount paid.$ 10.00 - $6.45 =$ 3.55. - Common Mistake: Students might subtract incorrectly, e.g., $10.00 -$ 6.45 = $4.55, by not regrouping correctly.

3. **(C) $10.00** - **Explanation:** To find the cost of 4 packets, we multiply the cost of one packet by 4.$ 2.50 × 4 = $10.00. - **Common Mistake:** Students might forget to write the final zero, writing$ 10 instead of $10.00. While$ 10 is numerically correct, in money context, it is good practice to write $10.00.

4. **(B) $8.05** - **Explanation:** Eight dollars is written as 8. Five cents is$ 0.05. Combined, it is $8.05. The cents are always written as a two-digit number after the decimal point. - **Common Mistake:** Students might write$ 8.5, which means eight dollars and fifty cents, or $8.50, which also means eight dollars and fifty cents.

5. **(B) $1.70** - **Explanation:** "How much more" means we find the difference. We subtract the cost of the drink from the cost of the sandwich.$ 3.50 - $1.80 =$ 1.70. - Common Mistake: Students might add the two amounts instead of subtracting.

Section B: Short-Answer Questions (Questions 6 to 15)

Each question carries 2 marks. 1 mark for correct method/working, 1 mark for correct final answer.

6. **Answer: $21.25** - **Working:**$ 12.50 + $8.75 =$ 21.25 - Explanation: To find the total amount spent, we add the cost of the two items. Align the decimal points and add: 12.50 + 8.75 = 21.25.

7. **Answer: $26.20** - **Working:**$ 50.00 - $23.80 =$ 26.20 - Explanation: To find the amount left, we subtract the amount spent from the initial amount. $50.00 -$ 23.80 = $26.20.

8. **Answer: $6.70** - **Working:**$ 15.60 - $8.90 =$ 6.70 - Explanation: "Difference" means we subtract the smaller amount from the larger amount. $15.60 -$ 8.90 = $6.70.

9. **Answer: $3.25** - **Working:**$ 0.65 × 5 = $3.25 - **Explanation:** To find the total cost of 5 erasers, we multiply the cost of one eraser by 5.$ 0.65 × 5 = $3.25.

10. **Answer: $0.80** - **Working:**$ 9.60 ÷ 12 = $0.80 - **Explanation:** To find the cost of one pen, we divide the total cost by the number of pens.$ 9.60 ÷ 12 = $0.80.

11. **Answer: $9.70** - **Working:**$ 7.50 + $2.80 =$ 10.30. Then, $20.00 -$ 10.30 = $9.70. - **Explanation:** First, find the total amount spent. Then, subtract that from the initial amount. Total spent:$ 7.50 + $2.80 =$ 10.30. Money left: $20.00 -$ 10.30 = $9.70.

12. **Answer: $4.20** - **Working:**$ 1.20 × 3.5 = $4.20 - **Explanation:** To find the cost of 3.5 metres, we multiply the cost per metre by the length.$ 1.20 × 3.5 = $4.20. Remember that 3.5 is the same as 3 ½.

13. Answer: No - Working: $15.90 × 6 =$ 95.40. Since $95.40 <$ 100, he has enough money. - Explanation: First, find the total cost of 6 chairs. $15.90 × 6 =$ 95.40. Then, compare this to the amount Mr Lim has ( $100). Since$ 95.40 is less than $100, he has enough money. - Marking Note: The answer is "Yes". The question asks "Does he have enough money?" The answer is yes. Award 1 mark for correct multiplication, 1 mark for correct comparison and answer.

14. **Answer: $0.75** - **Working:**$ 4.50 ÷ 6 = $0.75 - **Explanation:** To find the cost of one can, we divide the total cost of the pack by the number of cans.$ 4.50 ÷ 6 = $0.75.

15. **Answer: $40.30** - **Working:**$ 24.50 + $15.80 =$ 40.30 - Explanation: To find the total cost, we add the cost of the two items. $24.50 +$ 15.80 = $40.30.

Section C: Problem-Solving Questions (Questions 16 to 20)

Each question carries 3 marks. Marks are awarded for correct method, working, and final answer.

16. **Answer: $22.00** - **Working:** Cost of 5 boxes of apples:$ 12.60 × 5 = $63.00. Money left:$ 85.00 - $63.00 =$ 22.00. - Explanation: First, find the total cost of the apples. Then, subtract that from the amount the fruit seller had. - Marking Scheme: - 1 mark for correct multiplication ( $12.60 × 5 =$ 63.00) - 1 mark for correct subtraction ( $85.00 -$ 63.00 = $22.00) - 1 mark for correct final answer with unit ($ 22.00)

17. Answer: Sale price: $13.70, Change:$ 6.30 - Working: Sale price: $18.50 -$ 4.80 = $13.70. Change:$ 20.00 - $13.70 =$ 6.30. - Explanation: First, find the sale price by subtracting the discount from the original price. Then, find the change by subtracting the sale price from the amount paid. - Marking Scheme: - 1 mark for correct sale price ( $13.70) - 1 mark for correct change ($ 6.30) - 1 mark for showing both steps clearly

18. **Answer: Yes, Amount needed: $12.50 more** - **Working:** Total amount collected:$ 6.50 × 35 = $227.50. Comparison:$ 227.50 < $240.00. Amount needed:$ 240.00 - $227.50 =$ 12.50. - Explanation: First, find the total amount collected from the students. Then, compare it to the bus rental cost. Since the amount collected is less, more money is needed. Find the difference. - Marking Scheme: - 1 mark for correct multiplication ( $6.50 × 35 =$ 227.50) - 1 mark for correct comparison and answer (No, not enough) - 1 mark for correct amount needed ($12.50)

19. **Answer: $30.50** - **Working:** Cost of flour: 2.5 kg ×$ 1.80 = $4.50. Total selling price: 10 loaves ×$ 3.50 = $35.00. Profit:$ 35.00 - $4.50 =$ 30.50. - Explanation: First, find the cost of the flour used. Then, find the total selling price of all the loaves. Finally, subtract the cost from the selling price to find the profit. - Marking Scheme: - 1 mark for correct cost of flour ( $4.50) - 1 mark for correct total selling price ($ 35.00) - 1 mark for correct profit ($30.50)

20. **Answer (a): $9.30** - **Working:** Cost of 2 notebooks:$ 2.40 × 2 = $4.80. Cost of 3 pens:$ 1.50 × 3 = $4.50. Total cost:$ 4.80 + $4.50 =$ 9.30. - Explanation: Find the cost of each type of item separately, then add them together.

**Answer (b): Yes**
- **Working:** Cost of 1 notebook: $2.40. Cost of 2 pens: $1.50 × 2 = $3.00. Cost of 3 erasers: $0.80 × 3 = $2.40. Total cost: $2.40 + $3.00 + $2.40 = $7.80. Since $7.80 < $10.00, Ben has enough money.
- **Explanation:** Calculate the total cost of all the items Ben wants to buy. Then, compare it to the amount he has. If the total cost is less than or equal to $10, he has enough money.
- **Marking Scheme:**
    - (a) 1 mark for correct answer ($9.30)
    - (b) 1 mark for correct total cost ($7.80) and 1 mark for correct comparison and explanation.