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Primary 6 PSLE Mathematics Multiplication Division Quiz
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Questions
Primary 6 PSLE Mathematics Quiz - Multiplication Division
Name: ______________________________ Class: ______________ Date: ______________ Score: _____ / 40
Duration: 50 minutes
Total Marks: 40
Instructions:
- Answer ALL questions.
- Show your working clearly in the space provided.
- Calculators are NOT allowed.
- Write your final answer in the answer space provided.
- Marks are awarded for correct working as well as the final answer.
Section A: Short Answer Questions (10 × 2 marks = 20 marks)
Questions 1–10 each carry 2 marks. Write your answer in the space provided.
1. Calculate: 48 × 25 = ________________
Answer: ________________________________________________________________________
2. Calculate: 3,600 ÷ 12 = ________________
Answer: ________________________________________________________________________
3. A factory produces 2,450 toys each day. How many toys does it produce in 36 days?
Answer: ________________________________________________________________________
4. Calculate: 125 × 32 × 8 = ________________
Answer: ________________________________________________________________________
5. A fruit seller has 1,680 apples. He packs them equally into 48 boxes. How many apples are in each box?
Answer: ________________________________________________________________________
6. Calculate: 7,200 ÷ 15 ÷ 8 = ________________
Answer: ________________________________________________________________________
7. A school orders 25 packs of coloured paper. Each pack contains 144 sheets. How many sheets of paper does the school order in total?
Answer: ________________________________________________________________________
8. Calculate: 2,025 ÷ 45 = ________________
Answer: ________________________________________________________________________
9. A truck carries 1,260 kg of rice. The rice is divided equally into 35 bags. What is the mass of rice in each bag?
Answer: ________________________________________________________________________
10. Calculate: 999 × 18 = ________________
Answer: ________________________________________________________________________
Section B: Structured Questions (4 × 3 marks = 12 marks)
Questions 11–14 each carry 3 marks. Show all your working clearly.
11. A bakery bakes 375 loaves of bread per hour. It operates for 16 hours each day.
(a) How many loaves does the bakery bake in one day?
(b) How many loaves does it bake in a week (7 days)?
Answer (a): ________________________________________________________________________
Answer (b): ________________________________________________________________________
12. A warehouse has 10,800 bottles of water. The bottles are packed into cartons, with 24 bottles in each carton. The cartons are then loaded equally onto 15 trucks.
(a) How many cartons are there in total?
(b) How many cartons are loaded onto each truck?
Answer (a): ________________________________________________________________________
Answer (b): ________________________________________________________________________
13. Mr Tan bought 48 boxes of markers for his school. Each box contains 125 markers. He wants to distribute the markers equally among 15 classrooms.
(a) How many markers did Mr Tan buy altogether?
(b) How many markers does each classroom receive?
Answer (a): ________________________________________________________________________
Answer (b): ________________________________________________________________________
14. A printing company prints 2,880 pages per hour. Each book contains 120 pages.
(a) How many books can be printed in one hour?
(b) How many books can be printed in 25 hours?
Answer (a): ________________________________________________________________________
Answer (b): ________________________________________________________________________
Section C: Word Problems (2 × 4 marks = 8 marks)
Questions 15–16 each carry 4 marks. Show all your working clearly.
15. A farmer harvested 5,400 kg of oranges. He sold 3/5 of the oranges to a supermarket. He packed the remaining oranges equally into 36 boxes.
(a) How many kilograms of oranges did he sell to the supermarket?
(b) How many kilograms of oranges were in each box?
Answer (a): ________________________________________________________________________
Answer (b): ________________________________________________________________________
16. A school organised a funfair. They printed 4,500 tickets. On the first day, they sold 2/3 of the tickets. On the second day, they sold 3/5 of the remaining tickets.
(a) How many tickets were sold on the first day?
(b) How many tickets were left after the first day?
(c) How many tickets were sold on the second day?
(d) How many tickets were left unsold after the second day?
Answer (a): ________________________________________________________________________
Answer (b): ________________________________________________________________________
Answer (c): ________________________________________________________________________
Answer (d): ________________________________________________________________________
Section D: Multi-Step Challenge Problems (4 × 2 marks = 8 marks)
Questions 17–20 each carry 2 marks. These questions require careful thinking. Show all your working.
17. A shopkeeper bought 25 cartons of erasers. Each carton contains 48 erasers. He repacked the erasers into packets of 8. How many packets of erasers did he get?
Answer: ________________________________________________________________________
18. A water tank contains 9,600 litres of water. A pump removes 480 litres of water every hour. How many hours will it take to empty the tank completely?
Answer: ________________________________________________________________________
19. A factory has 3 machines. Machine A produces 250 items per hour. Machine B produces 3 times as many items as Machine A. Machine C produces 150 items fewer per hour than Machine B. How many items do all 3 machines produce altogether in one hour?
Answer: ________________________________________________________________________
20. A school has 1,800 students. For a mass exercise, the students are arranged in rows. If 45 students stand in each row, how many rows are there? The school then rearranges the students so that there are 36 students in each row. How many rows are there now?
Answer: ________________________________________________________________________
End of Quiz
© TuitionGoWhere Practice Paper (AI) — Version 1 of 5
Answers
Primary 6 PSLE Mathematics Quiz - Multiplication Division
Answer Key
Section A: Short Answer Questions (10 × 2 marks = 20 marks)
1. Calculate: 48 × 25
Working: 48 × 25 = 48 × (100 ÷ 4) = (48 × 100) ÷ 4 = 4,800 ÷ 4 = 1,200
Alternative: 48 × 25 = (50 − 2) × 25 = 50 × 25 − 2 × 25 = 1,250 − 50 = 1,200
Answer: 1,200
Marks: 2
Common mistake: Students may forget to carry over or misalign place value when using long multiplication.
2. Calculate: 3,600 ÷ 12
Working: 3,600 ÷ 12 = 3,600 ÷ (6 × 2) = (3,600 ÷ 6) ÷ 2 = 600 ÷ 2 = 300
Alternative: 12 × 300 = 3,600 ✓
Answer: 300
Marks: 2
Common mistake: Dividing by only one factor of 12 instead of both.
3. A factory produces 2,450 toys each day. How many toys does it produce in 36 days?
Working: 2,450 × 36 = 2,450 × (30 + 6) = 2,450 × 30 + 2,450 × 6 = 73,500 + 14,700 = 88,200
Answer: 88,200 toys
Marks: 2
Common mistake: Forgetting to add both partial products; misalignment in long multiplication.
4. Calculate: 125 × 32 × 8
Working: Use associative property: 125 × 8 × 32 = (125 × 8) × 32 125 × 8 = 1,000 1,000 × 32 = 32,000
Answer: 32,000
Marks: 2
Common mistake: Multiplying in the given order (125 × 32 first) makes calculation harder. Students should look for number bonds (125 × 8 = 1,000).
5. A fruit seller has 1,680 apples. He packs them equally into 48 boxes. How many apples are in each box?
Working: 1,680 ÷ 48
Simplify: 1,680 ÷ 48 = 1,680 ÷ (6 × 8) = (1,680 ÷ 8) ÷ 6 1,680 ÷ 8 = 210 210 ÷ 6 = 35
Answer: 35 apples
Marks: 2
Common mistake: Not simplifying the divisor; attempting long division with a two-digit divisor without breaking it down.
6. Calculate: 7,200 ÷ 15 ÷ 8
Working: 7,200 ÷ 15 = 7,200 ÷ (3 × 5) = (7,200 ÷ 3) ÷ 5 = 2,400 ÷ 5 = 480 480 ÷ 8 = 60
Answer: 60
Marks: 2
Common mistake: Dividing by 15 × 8 = 120 directly without recognising 7,200 ÷ 120 = 60 also works, but students may make errors with larger divisors.
7. A school orders 25 packs of coloured paper. Each pack contains 144 sheets. How many sheets of paper does the school order in total?
Working: 144 × 25 = 144 × (100 ÷ 4) = (144 × 100) ÷ 4 = 14,400 ÷ 4 = 3,600
Answer: 3,600 sheets
Marks: 2
Common mistake: Students may try long multiplication instead of using the 25 = 100 ÷ 4 shortcut.
8. Calculate: 2,025 ÷ 45
Working: 2,025 ÷ 45 = 2,025 ÷ (9 × 5) = (2,025 ÷ 9) ÷ 5 2,025 ÷ 9 = 225 225 ÷ 5 = 45
Answer: 45
Marks: 2
Common mistake: Not recognising that 45 = 9 × 5 and attempting direct long division.
9. A truck carries 1,260 kg of rice. The rice is divided equally into 35 bags. What is the mass of rice in each bag?
Working: 1,260 ÷ 35 = 1,260 ÷ (7 × 5) = (1,260 ÷ 7) ÷ 5 1,260 ÷ 7 = 180 180 ÷ 5 = 36
Answer: 36 kg
Marks: 2
Common mistake: Dividing by 5 first gives 252, then 252 ÷ 7 = 36 — also correct, but students may struggle with 252 ÷ 7.
10. Calculate: 999 × 18
Working: 999 × 18 = (1,000 − 1) × 18 = 1,000 × 18 − 1 × 18 = 18,000 − 18 = 17,982
Answer: 17,982
Marks: 2
Common mistake: Students may attempt long multiplication and make errors with repeated 9s. The (1,000 − 1) method is more efficient.
Section B: Structured Questions (4 × 3 marks = 12 marks)
Marking: 1 mark for correct method/working, 1 mark for correct intermediate step, 1 mark for correct final answer.
11. A bakery bakes 375 loaves of bread per hour. It operates for 16 hours each day.
(a) How many loaves does the bakery bake in one day?
Working: 375 × 16 = 375 × (10 + 6) = 3,750 + 2,250 = 6,000
Alternative: 375 × 16 = 375 × (4 × 4) = (375 × 4) × 4 = 1,500 × 4 = 6,000
Answer (a): 6,000 loaves
(b) How many loaves does it bake in a week (7 days)?
Working: 6,000 × 7 = 42,000
Answer (b): 42,000 loaves
Marks: 3 (1 for correct method in (a), 1 for correct answer in (a), 1 for correct answer in (b))
Common mistake: In part (b), students may multiply 375 × 7 or 16 × 7 instead of using the daily total.
12. A warehouse has 10,800 bottles of water. The bottles are packed into cartons, with 24 bottles in each carton. The cartons are then loaded equally onto 15 trucks.
(a) How many cartons are there in total?
Working: 10,800 ÷ 24 = 10,800 ÷ (6 × 4) = (10,800 ÷ 6) ÷ 4 = 1,800 ÷ 4 = 450
Answer (a): 450 cartons
(b) How many cartons are loaded onto each truck?
Working: 450 ÷ 15 = 450 ÷ (5 × 3) = (450 ÷ 5) ÷ 3 = 90 ÷ 3 = 30
Answer (b): 30 cartons per truck
Marks: 3 (1 for correct method in (a), 1 for correct answer in (a), 1 for correct answer in (b))
Common mistake: In part (b), students may divide 10,800 by 15 directly instead of using the number of cartons.
13. Mr Tan bought 48 boxes of markers for his school. Each box contains 125 markers. He wants to distribute the markers equally among 15 classrooms.
(a) How many markers did Mr Tan buy altogether?
Working: 125 × 48 = 125 × (50 − 2) = 6,250 − 250 = 6,000
Alternative: 125 × 48 = 125 × (8 × 6) = (125 × 8) × 6 = 1,000 × 6 = 6,000
Answer (a): 6,000 markers
(b) How many markers does each classroom receive?
Working: 6,000 ÷ 15 = 6,000 ÷ (5 × 3) = (6,000 ÷ 5) ÷ 3 = 1,200 ÷ 3 = 400
Answer (b): 400 markers per classroom
Marks: 3 (1 for correct method in (a), 1 for correct answer in (a), 1 for correct answer in (b))
Common mistake: In part (b), students may divide by 48 (number of boxes) instead of 15 (number of classrooms).
14. A printing company prints 2,880 pages per hour. Each book contains 120 pages.
(a) How many books can be printed in one hour?
Working: 2,880 ÷ 120 = 2,880 ÷ (12 × 10) = (2,880 ÷ 12) ÷ 10 2,880 ÷ 12 = 240 240 ÷ 10 = 24
Answer (a): 24 books
(b) How many books can be printed in 25 hours?
Working: 24 × 25 = 24 × (100 ÷ 4) = 2,400 ÷ 4 = 600
Answer (b): 600 books
Marks: 3 (1 for correct method in (a), 1 for correct answer in (a), 1 for correct answer in (b))
Common mistake: In part (b), students may multiply 2,880 × 25 and then divide by 120, which is correct but more prone to error.
Section C: Word Problems (2 × 4 marks = 8 marks)
Marking: 1 mark for each correct part (a) and (b). Award marks for correct method even if the final answer is wrong due to an earlier error (follow-through).
15. A farmer harvested 5,400 kg of oranges. He sold 3/5 of the oranges to a supermarket. He packed the remaining oranges equally into 36 boxes.
(a) How many kilograms of oranges did he sell to the supermarket?
Working: 3/5 × 5,400 = 3 × (5,400 ÷ 5) = 3 × 1,080 = 3,240
Answer (a): 3,240 kg
(b) How many kilograms of oranges were in each box?
Working: Remaining oranges = 5,400 − 3,240 = 2,160 kg 2,160 ÷ 36 = 2,160 ÷ (6 × 6) = (2,160 ÷ 6) ÷ 6 = 360 ÷ 6 = 60
Answer (b): 60 kg per box
Marks: 4 (1 for correct method in (a), 1 for correct answer in (a), 1 for correct method in (b), 1 for correct answer in (b))
Common mistake: In part (b), students may divide 5,400 by 36 instead of finding the remainder first.
16. A school organised a funfair. They printed 4,500 tickets. On the first day, they sold 2/3 of the tickets. On the second day, they sold 3/5 of the remaining tickets.
(a) How many tickets were sold on the first day?
Working: 2/3 × 4,500 = 2 × (4,500 ÷ 3) = 2 × 1,500 = 3,000
Answer (a): 3,000 tickets
(b) How many tickets were left after the first day?
Working: 4,500 − 3,000 = 1,500
Answer (b): 1,500 tickets
(c) How many tickets were sold on the second day?
Working: 3/5 × 1,500 = 3 × (1,500 ÷ 5) = 3 × 300 = 900
Answer (c): 900 tickets
(d) How many tickets were left unsold after the second day?
Working: 1,500 − 900 = 600
Answer (d): 600 tickets
Marks: 4 (1 mark for each correct part)
Common mistake: In part (c), students may calculate 3/5 of 4,500 (the original amount) instead of 3/5 of the remaining 1,500 tickets. This is the classic "fraction of remainder" error.
Section D: Multi-Step Challenge Problems (4 × 2 marks = 8 marks)
Marking: 1 mark for correct method/working, 1 mark for correct final answer.
17. A shopkeeper bought 25 cartons of erasers. Each carton contains 48 erasers. He repacked the erasers into packets of 8. How many packets of erasers did he get?
Working: Total erasers = 25 × 48 = 25 × (50 − 2) = 1,250 − 50 = 1,200 Number of packets = 1,200 ÷ 8 = 150
Answer: 150 packets
Marks: 2
Common mistake: Students may divide 48 by 8 = 6, then 25 × 6 = 150 — this is also correct and shows good number sense.
18. A water tank contains 9,600 litres of water. A pump removes 480 litres of water every hour. How many hours will it take to empty the tank completely?
Working: 9,600 ÷ 480 = 9,600 ÷ (48 × 10) = (9,600 ÷ 10) ÷ 48 = 960 ÷ 48 960 ÷ 48 = 960 ÷ (6 × 8) = (960 ÷ 6) ÷ 8 = 160 ÷ 8 = 20
Answer: 20 hours
Marks: 2
Common mistake: Students may divide 9,600 by 48 and forget to account for the factor of 10, getting 200 instead of 20.
19. A factory has 3 machines. Machine A produces 250 items per hour. Machine B produces 3 times as many items as Machine A. Machine C produces 150 items fewer per hour than Machine B. How many items do all 3 machines produce altogether in one hour?
Working: Machine A = 250 items/hour Machine B = 3 × 250 = 750 items/hour Machine C = 750 − 150 = 600 items/hour Total = 250 + 750 + 600 = 1,600
Answer: 1,600 items per hour
Marks: 2
Common mistake: Students may forget to subtract 150 for Machine C, or may add only Machine A and Machine B.
20. A school has 1,800 students. For a mass exercise, the students are arranged in rows. If 45 students stand in each row, how many rows are there? The school then rearranges the students so that there are 36 students in each row. How many rows are there now?
Working: First arrangement: 1,800 ÷ 45 = 1,800 ÷ (9 × 5) = (1,800 ÷ 9) ÷ 5 = 200 ÷ 5 = 40 rows Second arrangement: 1,800 ÷ 36 = 1,800 ÷ (6 × 6) = (1,800 ÷ 6) ÷ 6 = 300 ÷ 6 = 50 rows
Answer: 40 rows (first arrangement), 50 rows (second arrangement)
Marks: 2
Common mistake: Students may only answer one part. Both answers are required for full marks.
Summary of Marks
| Section | Questions | Marks per Question | Total Marks |
|---|---|---|---|
| A | 1–10 | 2 | 20 |
| B | 11–14 | 3 | 12 |
| C | 15–16 | 4 | 8 |
| D | 17–20 | 2 | 8 |
| Total | 20 questions | 40 |
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