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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 01 Updated 2026-08-17

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Questions

Primary 4 Mathematics Quiz - Money

Name: ______________________________________ Class: ______________ Date: ______________

Score: ______________ / 40

Duration: 40 minutes

Instructions:

This quiz has 20 questions on the topic of Money.
Answer all questions.
Show your working clearly for all questions.
Write your answers in the spaces provided.
You may use a calculator.

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

Circle the correct answer. Each question carries 1 mark.

1. Which of the following is the same as $5.60?

A) 5 dollars and 6 cents
B) 5 dollars and 60 cents
C) 56 dollars
D) 560 cents

Answer: ________

2. A pencil costs $1.20. What is the total cost of 4 such pencils?

A) $4.20
B) $4.80
C) $5.00
D) $5.20

Answer: ________

3. Sarah has a $10 note. She buys a book for$ 6.45. How much change does she receive?

A) $3.55
B) $3.65
C) $4.55
D) $4.65

Answer: ________

4. Which of the following amounts is the greatest?

A) $0.99
B) $1.09
C) $0.90
D) $1.90

Answer: ________

5. A packet of sweets costs $2.50. Mr Tan buys 3 packets. How much does he pay?

A) $5.50
B) $6.50
C) $7.50
D) $7.00

Answer: ________

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

Show your working clearly. Each question carries 2 marks.

6. Write $8.05 in words.

Answer: ________________________________________________________

7. Convert 450 cents to dollars.

Answer: $ ________

8. A ruler costs $1.50. An eraser costs$ 0.80. What is the total cost of the ruler and the eraser?

Answer: $ ________

9. Mei Ling has $20. She spends$ 12.75 on a toy. How much money does she have left?

Answer: $ ________

10. A box of 6 apples costs $4.80. What is the cost of 1 apple?

Answer: $ ________

11. John has 3 fifty-cent coins, 4 twenty-cent coins, and 5 ten-cent coins. How much money does he have in total?

Answer: $ ________

12. A drink costs $1.20. A sandwich costs$ 3.50. How much more does the sandwich cost than the drink?

Answer: $ ________

13. Mrs Lim buys 2 kg of rice at $3.20 per kg and 1 kg of sugar at$ 2.15. How much does she pay altogether?

Answer: $ ________

14. A pen costs $2.40. A notebook costs$ 1.60. What is the total cost of 3 pens and 2 notebooks?

Answer: $ ________

15. Peter has $15. He wants to buy 4 toy cars that cost$ 3.80 each. Does he have enough money? Show your working.

Answer: ________ (Yes / No)

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

Show your working clearly. Each question carries 3 marks.

16. A shop sells a T-shirt for $12.50 and a pair of shorts for$ 18.90. During a sale, the shop gives a discount of $5.00 for every purchase of a T-shirt and a pair of shorts. What is the cost of buying one T-shirt and one pair of shorts during the sale?

Answer: $ ________

17. At a funfair, 3 game tokens cost $2.40. How much do 7 game tokens cost?

Answer: $ ________

18. A fruit seller has $50. He buys 5 kg of oranges at$ 2.80 per kg and 3 kg of grapes at $4.50 per kg. How much money does he have left?

Answer: $ ________

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

Item	Price
Eraser	$0.60
Pencil	$0.80
Ruler	$1.20
Sharpener	$1.50

Ahmad buys 2 erasers, 3 pencils, and 1 ruler. He pays with a $10 note. How much change does he receive?

Answer: $ ________

20. A charity collects donations. On Monday, it collects $45.60. On Tuesday, it collects$ 38.90. On Wednesday, it collects $52.50. The charity wants to raise a total of$ 200. How much more money does it need to collect?

Answer: $ ________

End of Quiz

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Answers

Primary 4 Mathematics Quiz - Money (Answer Key)

Total Marks: 40

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

1 mark each

1. Answer: B) 5 dollars and 60 cents

Explanation: $5.60 means 5 dollars and 60 cents. The digit 5 is in the dollars place, and the digits 60 are in the cents place. Option A (5 dollars and 6 cents) would be$ 5.06. Option C (56 dollars) is $56.00. Option D (560 cents) is equal to$ 5.60, but the question asks for the same as $5.60, and the wording "5 dollars and 60 cents" is the standard way to read it. Option B is the correct reading.
Common mistake: Confusing $5.60 with$ 5.06 or 560 cents. While 560 cents is equal to $5.60, the question asks for the same amount in words, not in a different unit.

2. Answer: B) $4.80

Explanation: Cost of 1 pencil = $1.20. Cost of 4 pencils = 4 ×$ 1.20 = $4.80.
Working: $1.20 × 4 =$ 4.80
Common mistake: Forgetting to include the cents. $1.20 × 4 =$ 4.80, not $4.20.

3. Answer: A) $3.55

Explanation: Change = Amount paid - Cost of book = $10.00 -$ 6.45 = $3.55.
Working: $10.00 -$ 6.45 = $3.55
Common mistake: Subtracting incorrectly. $10.00 -$ 6.45 = $3.55, not$ 3.65.

4. Answer: D) $1.90

Explanation: Compare the amounts: $0.99,$ 1.09, $0.90,$ 1.90. $1.90 is the largest because it has 1 dollar and 90 cents, which is more than 1 dollar and 9 cents ($ 1.09) and much more than the amounts less than 1 dollar ( $0.99 and$ 0.90).
Common mistake: Thinking $0.99 is greater than$ 1.09 because 99 is greater than 9. Remember to compare the dollars first.

5. Answer: C) $7.50

Explanation: Cost of 1 packet = $2.50. Cost of 3 packets = 3 ×$ 2.50 = $7.50.
Working: $2.50 × 3 =$ 7.50
Common mistake: $2.50 × 3 =$ 7.50, not $7.00 or$ 6.50.

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

2 marks each

6. Answer: Eight dollars and five cents

Explanation: $8.05 means 8 dollars and 5 cents. The digits after the decimal point represent cents. Since there are two digits after the decimal, "05" means 5 cents. We write it as "eight dollars and five cents."
Marking: 1 mark for "eight dollars", 1 mark for "five cents". Accept "eight dollars and five cents" or "eight dollars five cents".

7. Answer: $4.50

Explanation: 100 cents = 1 dollar. To convert cents to dollars, divide by 100. 450 cents ÷ 100 = $4.50.
Working: 450 ÷ 100 = 4.50
Common mistake: Forgetting to put the decimal point. 450 cents = $4.50, not$ 450.

8. Answer: $2.30

Explanation: Total cost = Cost of ruler + Cost of eraser = $1.50 +$ 0.80 = $2.30.
Working: $1.50 +$ 0.80 = $2.30
Common mistake: Adding incorrectly. $1.50 +$ 0.80 = $2.30, not$ 2.30 (this is correct) or $1.58.

9. Answer: $7.25

Explanation: Money left = Amount Mei Ling had - Amount spent = $20.00 -$ 12.75 = $7.25.
Working: $20.00 -$ 12.75 = $7.25
Common mistake: Subtracting incorrectly. $20.00 -$ 12.75 = $7.25, not$ 7.75.

10. Answer: $0.80

Explanation: Cost of 1 apple = Total cost ÷ Number of apples = $4.80 ÷ 6 =$ 0.80.
Working: $4.80 ÷ 6 =$ 0.80
Common mistake: Dividing incorrectly. $4.80 ÷ 6 =$ 0.80, not $0.08.

11. Answer: $3.20

Explanation:
- Value of 3 fifty-cent coins = 3 × $0.50 =$ 1.50
- Value of 4 twenty-cent coins = 4 × $0.20 =$ 0.80
- Value of 5 ten-cent coins = 5 × $0.10 =$ 0.50
- Total = $1.50 +$ 0.80 + $0.50 =$ 2.80
Working: (3 × $0.50) + (4 ×$ 0.20) + (5 × $0.10) =$ 1.50 + $0.80 +$ 0.50 = $2.80
Common mistake: Forgetting to convert the number of coins to their value. 3 fifty-cent coins are worth $1.50, not 3 × 50 = 150 cents =$ 1.50 (this is correct, but students might forget to convert).

12. Answer: $2.30

Explanation: Difference = Cost of sandwich - Cost of drink = $3.50 -$ 1.20 = $2.30.
Working: $3.50 -$ 1.20 = $2.30
Common mistake: Subtracting incorrectly. $3.50 -$ 1.20 = $2.30, not$ 2.30 (this is correct).

13. Answer: $8.55

Explanation:
- Cost of 2 kg of rice = 2 × $3.20 =$ 6.40
- Cost of 1 kg of sugar = 1 × $2.15 =$ 2.15
- Total cost = $6.40 +$ 2.15 = $8.55
Working: (2 × $3.20) + (1 ×$ 2.15) = $6.40 +$ 2.15 = $8.55
Common mistake: Forgetting to multiply the cost of rice by the quantity. 2 kg of rice costs 2 × $3.20 =$ 6.40, not $3.20.

14. Answer: $10.40

Explanation:
- Cost of 3 pens = 3 × $2.40 =$ 7.20
- Cost of 2 notebooks = 2 × $1.60 =$ 3.20
- Total cost = $7.20 +$ 3.20 = $10.40
Working: (3 × $2.40) + (2 ×$ 1.60) = $7.20 +$ 3.20 = $10.40
Common mistake: Adding the unit prices first ( $2.40 +$ 1.60 = $4.00) and then multiplying by the total number of items (5). This is incorrect because the quantities are different.

15. Answer: No

Explanation:
- Cost of 4 toy cars = 4 × $3.80 =$ 15.20
- Peter has $15.00.
- Since $15.20 >$ 15.00, Peter does not have enough money.
Working: 4 × $3.80 =$ 15.20. $15.20 >$ 15.00. Therefore, he does not have enough money.
Marking: 1 mark for correct calculation of total cost, 1 mark for correct comparison and conclusion.

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

3 marks each

16. Answer: $26.40

Explanation:
- Original total cost = $12.50 +$ 18.90 = $31.40
- Discount = $5.00
- Cost during sale = $31.40 -$ 5.00 = $26.40
Working:
- Step 1: $12.50 +$ 18.90 = $31.40
- Step 2: $31.40 -$ 5.00 = $26.40
Marking: 1 mark for correct total, 1 mark for subtracting discount, 1 mark for final answer.
Common mistake: Forgetting to add the prices first before subtracting the discount.

17. Answer: $5.60

Explanation:
- Cost of 1 token = $2.40 ÷ 3 =$ 0.80
- Cost of 7 tokens = 7 × $0.80 =$ 5.60
Working:
- Step 1: $2.40 ÷ 3 =$ 0.80
- Step 2: $0.80 × 7 =$ 5.60
Marking: 1 mark for finding cost of 1 token, 1 mark for multiplying by 7, 1 mark for final answer.
Common mistake: Dividing incorrectly. $2.40 ÷ 3 =$ 0.80, not $0.08.

18. Answer: $22.50

Explanation:
- Cost of 5 kg of oranges = 5 × $2.80 =$ 14.00
- Cost of 3 kg of grapes = 3 × $4.50 =$ 13.50
- Total cost = $14.00 +$ 13.50 = $27.50
- Money left = $50.00 -$ 27.50 = $22.50
Working:
- Step 1: 5 × $2.80 =$ 14.00
- Step 2: 3 × $4.50 =$ 13.50
- Step 3: $14.00 +$ 13.50 = $27.50
- Step 4: $50.00 -$ 27.50 = $22.50
Marking: 1 mark for correct cost of oranges, 1 mark for correct cost of grapes, 1 mark for correct final answer.
Common mistake: Forgetting to multiply the unit prices by the quantities.

19. Answer: $3.80

Explanation:
- Cost of 2 erasers = 2 × $0.60 =$ 1.20
- Cost of 3 pencils = 3 × $0.80 =$ 2.40
- Cost of 1 ruler = 1 × $1.20 =$ 1.20
- Total cost = $1.20 +$ 2.40 + $1.20 =$ 4.80
- Change = $10.00 -$ 4.80 = $5.20
Working:
- Step 1: (2 × $0.60) + (3 ×$ 0.80) + (1 × $1.20) =$ 1.20 + $2.40 +$ 1.20 = $4.80
- Step 2: $10.00 -$ 4.80 = $5.20
Marking: 1 mark for correct total cost, 1 mark for correct subtraction, 1 mark for final answer.
Common mistake: Forgetting to multiply the unit prices by the quantities. Also, forgetting to subtract from the $10 note.

20. Answer: $63.00

Explanation:
- Total collected so far = $45.60 +$ 38.90 + $52.50 =$ 137.00
- Amount still needed = $200.00 -$ 137.00 = $63.00
Working:
- Step 1: $45.60 +$ 38.90 = $84.50
- Step 2: $84.50 +$ 52.50 = $137.00
- Step 3: $200.00 -$ 137.00 = $63.00
Marking: 1 mark for correct total collected, 1 mark for correct subtraction, 1 mark for final answer.
Common mistake: Adding incorrectly. $45.60 +$ 38.90 = $84.50, not$ 84.50 (this is correct). Also, forgetting to subtract from the target amount.

End of Answer Key