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Primary 6 PSLE Mathematics Money Quiz
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Primary 6 PSLE Mathematics Quiz - Money (Answer Key)
Total Marks: 40
Section A: Multiple-Choice Questions (5 × 2 marks = 10 marks)
1. B) $78.50 [2 marks]
- Working: 32.90 = $78.50
- Teaching note: When adding money in decimal form, align the decimal points and add like whole numbers. The cents (60 + 90 = 150) give 50 cents and carry 1 dollar to the dollars column (45 + 32 + 1 = 78).
2. A) $5.70 [2 marks]
- Working: 12.80 = $5.70
- Teaching note: "How much more" means find the difference by subtraction. Align decimal points: 18.50 - 12.80 = 5.70.
3. B) $12.50 [2 marks]
- Working: 12.50
- Teaching note: "5 identical books" means the total cost is shared equally. Divide the total by the number of items.
4. B) 4 [2 marks]
- Working: 4.90 = 4 remainder $0.40. So he can buy 4 pencil cases.
- Teaching note: The question asks for the maximum number. Since 19.60 (within 4.90 × 5 = 20), the answer is 4. The remainder is not enough for another pencil case.
5. B) $7.20 [2 marks]
- Working: 28.70 = $7.20
- Teaching note: Discount = original price - sale price. Subtract the sale price from the original price.
Section B: Short-Answer Questions (10 × 2 marks = 20 marks)
6. $35.75 [2 marks]
- Working: 35.75 = 100 - 35.75 (money left).
- Teaching note: First find the total amount spent by adding the cost of the book and bag. Then subtract from the original amount to find the remainder.
- Marking: 1 mark for correct total spent, 1 mark for correct final answer.
7. $30.00 [2 marks]
- Working: Cost price = 120 × 78.00. Selling price = 120 × 108.00. Profit = 78.00 = $30.00.
- Teaching note: Profit = total selling price - total cost price. First find the total cost and total revenue separately, then subtract.
- Marking: 1 mark for correct cost and selling price, 1 mark for correct profit.
8. $12.00 [2 marks]
- Working: Cost of 1 box of chocolates = 3 × 7.20. Cost of 2 packets of biscuits = 2 × 4.80. Total = 7.20 = $12.00.
- Teaching note: "3 times as much" means multiply by 3. Find the cost of each item separately, then add.
- Marking: 1 mark for correct cost of chocolates, 1 mark for correct total.
9. $4.50 [2 marks]
- Working: 4.50.
- Teaching note: "Each ticket was sold at the same price" means divide the total collection by the number of tickets.
- Marking: 1 mark for correct division setup, 1 mark for correct answer.
10. $17.40 [2 marks]
- Working: Cost of apples = 3 × 8.40. Cost of grapes = 2 × 9.00. Total = 9.00 = $17.40.
- Teaching note: Multiply the quantity by the price per kg for each fruit, then add the totals.
- Marking: 1 mark for correct cost of apples and grapes, 1 mark for correct total.
11. $216.00 [2 marks]
- Working: 180 × 216.00.
- Teaching note: The shop only sold 180 kg of rice. Multiply the amount sold by the price per kg. The 250 kg total is extra information not needed for this question.
- Marking: 1 mark for correct multiplication, 1 mark for correct answer.
12. $2.30 [2 marks]
- Working: 4.60 = $2.30.
- Teaching note: "How much more" means find the difference. Subtract the smaller amount from the larger amount.
- Marking: 1 mark for correct subtraction setup, 1 mark for correct answer.
13. $16.00 [2 marks]
- Working: Total selling price = 80 × 56.00. Profit = 40.00 = $16.00.
- Teaching note: Profit = total revenue - total cost. First find the total revenue from selling all apples.
- Marking: 1 mark for correct total selling price, 1 mark for correct profit.
14. $0.40 [2 marks]
- Working: 0.40.
- Teaching note: Divide the total cost of the box by the number of pencils to find the cost per pencil.
- Marking: 1 mark for correct division, 1 mark for correct answer.
15. $72.50 [2 marks]
- Working: 12.50 = $72.50.
- Teaching note: Sale price = original price - discount. Subtract the discount amount from the original price.
- Marking: 1 mark for correct subtraction, 1 mark for correct answer.
Section C: Problem-Solving Questions (5 × 2 marks = 10 marks)
16. $790.50 [2 marks]
- Working: Money from cakes = 45 × 562.50. Money from tarts = 60 × 228.00. Total = 228.00 = $790.50.
- Teaching note: Find the revenue from each item separately by multiplying quantity by price, then add the totals.
- Marking: 1 mark for correct revenue from cakes and tarts, 1 mark for correct total.
17. $80.00 [2 marks]
- Working: Cost price = 200 × 240.00. Number of bags = 200 ÷ 5 = 40 bags. Selling price = 40 × 280.00. Profit = 240.00 = $40.00.
- Teaching note: First find the total cost. Then find how many 5 kg bags can be made from 200 kg. Multiply by the selling price per bag to find total revenue. Profit = revenue - cost.
- Marking: 1 mark for correct cost and revenue, 1 mark for correct profit.
18. $17.10 [2 marks]
- Working: 17.10.
- Teaching note: "Shared equally" means divide the total bill by the number of people.
- Marking: 1 mark for correct division, 1 mark for correct answer.
19. $162.00 [2 marks]
- Working: Total markers = 15 × 12 = 180 markers. Total cost = 15 × 279.00. Total selling price = 180 × 450.00. Profit = 279.00 = $171.00.
- Teaching note: First find the total number of markers. Then find the total cost (cost per box × number of boxes) and total revenue (selling price per marker × total markers). Profit = revenue - cost.
- Marking: 1 mark for correct cost and revenue, 1 mark for correct profit.
20. $24.00 [2 marks]
- Working: Money from sugar = 80 × 120.00. Money from salt = 120 × 96.00. Difference = 96.00 = $24.00.
- Teaching note: "How much more" means find the difference. Calculate the revenue from each item separately, then subtract the smaller from the larger. The total of 120 + 216.
- Marking: 1 mark for correct revenue from sugar and salt, 1 mark for correct difference.
End of Answer Key