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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: Primary 6 _______
Date: _______________
Score: ________ / 50

Duration: 50 minutes
Total Marks: 50

Instructions:

Answer all questions.
Show your working clearly in the space provided.
Write your answers in the blanks provided.
For word problems, write your final answer with the correct unit.
The use of calculators is NOT allowed.

Section A: Multiple-Choice Questions (5 × 1 mark = 5 marks)

For each question, four options are given. Choose the correct answer and write its number (1, 2, 3 or 4) in the bracket provided.

1. What is the product of 245 and 36?
( )
(1) 8820
(2) 8825
(3) 8830
(4) 8835

2. Which of the following is the quotient when 4896 is divided by 16?
( )
(1) 306
(2) 308
(3) 316
(4) 318

3. Find the value of $72 \times 125$ .
( )
(1) 8800
(2) 8900
(3) 9000
(4) 9100

4. A box contains 48 packets of biscuits. Each packet has 12 biscuits. How many biscuits are there in 15 such boxes?
( )
(1) 7200
(2) 8640
(3) 8740
(4) 8840

5. What is the remainder when 5672 is divided by 23?
( )
(1) 12
(2) 14
(3) 16
(4) 18

Section B: Short-Answer Questions (5 × 2 marks = 10 marks)

Show your working clearly and write your answers in the blanks provided.

6. $345 \times 28 = 345 \times 20 + 345 \times \square$ . What is the missing number?
Ans: _______________

7. The product of two numbers is 4536. One of the numbers is 54. What is the other number?
Ans: _______________

8. A factory produces 285 toys each day. How many toys does it produce in 24 days?
Ans: _______________

9. Which of the following divisions gives a quotient of 142 and a remainder of 7?
( )
(1) $1143 \div 8$
(2) $1001 \div 7$
(3) $1143 \div 7$
(4) $1001 \div 8$

10. Estimate the value of $487 \times 53$ by rounding each number to the nearest ten.
Ans: _______________

Section C: Structured Questions (5 × 3 marks = 15 marks)

Show your working clearly and write your answers in the blanks provided.

11. Multiply 308 by 47.
Ans: _______________

12. Divide 6720 by 32.
Ans: _______________

13. Find the product of 125 and 88.
Ans: _______________

14. What is the quotient and remainder when 9876 is divided by 45?
Ans: Quotient = __________, Remainder = __________

15. A baker uses 250 g of flour to bake one cake. How many kilograms of flour does he need to bake 36 cakes?
Ans: _______________ kg

Section D: Word Problems (5 × 4 marks = 20 marks)

Show your working clearly and write your final answer with the correct unit.

16. There are 48 rows of chairs in a hall. Each row has 27 chairs. If 15 chairs are broken, how many chairs are not broken?

Working:

Ans: _______________

17. A number multiplied by 18 gives 3402. What is the number?

Working:

Ans: _______________

18. Pack 5678 apples into boxes of 24. How many boxes are completely filled and how many apples are left over?

Working:

Ans: _______________ boxes, _______________ apples left

19. The product of two numbers is 5808. One number is 3 times the other. Find the two numbers.

Working:

Ans: _______________ and _______________

20. A rectangular tank measures 60 cm by 40 cm by 30 cm. It is filled with water to a height of 20 cm. How many litres of water are in the tank? (1 litre = 1000 cm³)

Working:

Ans: _______________ litres

End of Quiz

Answers

Primary 6 PSLE Mathematics Quiz - Multiplication Division (Answer Key)

Total Marks: 50

Section A: Multiple-Choice Questions (5 × 1 mark = 5 marks)

1. (1) 8820
Working: $245 \times 36 = 245 \times (30 + 6) = 7350 + 1470 = 8820$
Explanation: Break 36 into 30 and 6. Multiply 245 by each part, then add the results.
Marking Note: 1 mark for correct answer.

2. (1) 306
Working: $4896 \div 16 = 306$ (since $306 \times 16 = 4896$ )
Explanation: Use long division or multiplication check. $300 \times 16 = 4800$ , $6 \times 16 = 96$ , total $4896$ .
Marking Note: 1 mark for correct answer.

3. (3) 9000
Working: $72 \times 125 = 72 \times \frac{1000}{8} = 9 \times 1000 = 9000$
Alternative: $72 \times 125 = 8 \times 9 \times 125 = 9 \times 1000 = 9000$
Explanation: Recognise $125 = \frac{1000}{8}$ . Divide 72 by 8 to get 9, then multiply by 1000.
Marking Note: 1 mark for correct answer.

4. (2) 8640
Working: $48 \times 12 \times 15 = 576 \times 15 = 8640$
Explanation: First find biscuits per box: $48 \times 12 = 576$ . Then multiply by 15 boxes: $576 \times 15 = 576 \times (10 + 5) = 5760 + 2880 = 8640$ .
Marking Note: 1 mark for correct answer.

5. (2) 14
Working: $23 \times 246 = 5658$ , $5672 - 5658 = 14$
Explanation: Divide 5672 by 23. $23 \times 200 = 4600$ , remainder 1072. $23 \times 40 = 920$ , remainder 152. $23 \times 6 = 138$ , remainder 14. Quotient 246, remainder 14.
Marking Note: 1 mark for correct answer.

Section B: Short-Answer Questions (5 × 2 marks = 10 marks)

6. 8
Working: $345 \times 28 = 345 \times (20 + 8) = 345 \times 20 + 345 \times 8$ . The missing number is 8.
Explanation: Split 28 into 20 and 8 using the distributive property.
Marking Note: 2 marks for correct answer. 1 mark if working shows understanding but wrong final answer.

7. 84
Working: $4536 \div 54 = 84$ (since $84 \times 54 = 4536$ )
Explanation: Divide 4536 by 54. Estimate: $54 \times 80 = 4320$ , remainder 216. $54 \times 4 = 216$ . So $80 + 4 = 84$ .
Marking Note: 2 marks for correct answer. 1 mark for correct method with calculation error.

8. 6840
Working: $285 \times 24 = 285 \times (20 + 4) = 5700 + 1140 = 6840$
Explanation: Multiply 285 by 20 (5700) and by 4 (1140), then add.
Marking Note: 2 marks for correct answer. 1 mark for correct method with calculation error.

9. (1) $1143 \div 8$
Working: For quotient 142 and remainder 7, dividend = $142 \times \text{divisor} + 7$ . Remainder must be less than divisor, so divisor > 7.
Check (1): $1143 \div 8$ : $8 \times 142 = 1136$ , $1143 - 1136 = 7$ . Quotient 142, remainder 7. ✓
Check (2): $1001 \div 7 = 143$ remainder 0. ✗
Check (3): $1143 \div 7 = 163$ remainder 2. ✗
Check (4): $1001 \div 8 = 125$ remainder 1. ✗
Explanation: The dividend must equal (quotient × divisor) + remainder, with remainder < divisor. Only option (1) satisfies this.
Marking Note: 2 marks for correct answer with working. 1 mark for correct answer only.

10. 24500
Working: $487 \approx 490$ (nearest ten), $53 \approx 50$ (nearest ten). $490 \times 50 = 24500$ .
Explanation: Round each number to the nearest ten first, then multiply. $490 \times 50 = 49 \times 5 \times 100 = 245 \times 100 = 24500$ .
Marking Note: 2 marks for correct answer. 1 mark for correct rounding but multiplication error.

Section C: Structured Questions (5 × 3 marks = 15 marks)

11. 14476
Working:
$308 \times 47 = 308 \times (40 + 7) = 12320 + 2156 = 14476$
Or:

   308
×   47
------
  2156  (308 × 7)
 12320  (308 × 40)
------
 14476

Explanation: Multiply 308 by 7 (2156), then by 40 (12320), add the partial products. Align place values correctly.
Marking Note: 3 marks for correct answer with clear working. 2 marks for correct method with one calculation error. 1 mark for correct method with multiple errors or only partial working.

12. 210
Working: $6720 \div 32 = 210$
Check: $210 \times 32 = 6720$
Long division:
$32)6720$
$32 \times 2 = 64$ , remainder 3, bring down 2 → 32
$32 \times 1 = 32$ , remainder 0, bring down 0 → 0
$32 \times 0 = 0$
Quotient = 210
Explanation: Divide step by step. 67 ÷ 32 = 2 remainder 3. Bring down 2 → 32. 32 ÷ 32 = 1. Bring down 0 → 0. 0 ÷ 32 = 0.
Marking Note: 3 marks for correct answer with working. 2 marks for correct quotient with minor working error. 1 mark for correct method only.

13. 11000
Working: $125 \times 88 = 125 \times 8 \times 11 = 1000 \times 11 = 11000$
Or: $125 \times 88 = 125 \times (80 + 8) = 10000 + 1000 = 11000$
Explanation: Use the fact that $125 \times 8 = 1000$ . Then $88 = 8 \times 11$ , so $125 \times 88 = 1000 \times 11 = 11000$ .
Marking Note: 3 marks for correct answer with working. 2 marks for correct method with calculation error. 1 mark for partial working.

14. Quotient = 219, Remainder = 21
Working: $9876 \div 45$
$45 \times 200 = 9000$ , remainder 876
$45 \times 19 = 855$ , remainder 21
$200 + 19 = 219$
Check: $219 \times 45 = 9855$ , $9855 + 21 = 9876$ . ✓
Explanation: Use estimation. 45 × 200 = 9000. Subtract from 9876 → 876. 45 × 19 = 855 (since 45 × 20 = 900, minus 45 = 855). Remainder 21. Total quotient 219.
Marking Note: 3 marks for both correct with working. 2 marks for one correct with working. 1 mark for correct method only.

15. 9 kg
Working: $250 \text{ g} \times 36 = 9000 \text{ g} = 9 \text{ kg}$
$250 \times 36 = 250 \times (30 + 6) = 7500 + 1500 = 9000 \text{ g}$
$9000 \text{ g} \div 1000 = 9 \text{ kg}$
Explanation: Find total grams first: 250 × 36 = 9000 g. Convert to kg by dividing by 1000.
Marking Note: 3 marks for correct answer with unit. 2 marks for correct grams but missing/incorrect conversion. 1 mark for correct method only.

Section D: Word Problems (5 × 4 marks = 20 marks)

16. 1281
Working:
Total chairs = $48 \times 27 = 1296$
$48 \times 27 = 48 \times (20 + 7) = 960 + 336 = 1296$
Good chairs = $1296 - 15 = 1281$
Explanation: First find total chairs (rows × chairs per row). Then subtract broken chairs.
Marking Note: 4 marks for correct answer with clear steps. 3 marks for correct method with one calculation error. 2 marks for correct total chairs but forgot to subtract. 1 mark for partial working.

17. 189
Working:
Number = $3402 \div 18 = 189$
Check: $189 \times 18 = 189 \times (10 + 8) = 1890 + 1512 = 3402$ . ✓
Explanation: Divide 3402 by 18. $18 \times 100 = 1800$ , remainder 1602. $18 \times 80 = 1440$ , remainder 162. $18 \times 9 = 162$ . Total $100 + 80 + 9 = 189$ .
Marking Note: 4 marks for correct answer with working. 3 marks for correct method with calculation error. 2 marks for partial division. 1 mark for attempt.

18. 236 boxes, 14 apples left
Working:
$5678 \div 24$
$24 \times 200 = 4800$ , remainder 878
$24 \times 30 = 720$ , remainder 158
$24 \times 6 = 144$ , remainder 14
$200 + 30 + 6 = 236$ boxes, remainder 14 apples
Check: $236 \times 24 = 5664$ , $5664 + 14 = 5678$ . ✓
Explanation: Divide 5678 by 24 using long division or chunking. 24 × 200 = 4800. Subtract, bring down. 24 × 30 = 720. Subtract. 24 × 6 = 144. Remainder 14.
Marking Note: 4 marks for both correct with working. 3 marks for one correct with working. 2 marks for correct method only. 1 mark for attempt.

19. 44 and 132
Working:
Let the smaller number be $x$ . The larger is $3x$ .
$x \times 3x = 5808$
$3x^2 = 5808$
$x^2 = 1936$
$x = \sqrt{1936} = 44$ (since $44 \times 44 = 1936$ )
Larger number = $3 \times 44 = 132$
Check: $44 \times 132 = 5808$ . ✓
Explanation: Set up equation: smaller × 3×smaller = 5808. So 3×(smaller)² = 5808. Divide by 3: (smaller)² = 1936. Find square root: 44. Other number: 132.
Marking Note: 4 marks for both correct with working. 3 marks for correct equation and method with calculation error. 2 marks for correct equation only. 1 mark for attempt.

20. 48 litres
Working:
Volume of water = $60 \times 40 \times 20 = 48000 \text{ cm}^3$
$48000 \text{ cm}^3 \div 1000 = 48 \text{ litres}$
Explanation: Volume = length × width × height of water. Height of water is 20 cm (not full tank height 30 cm). $60 \times 40 \times 20 = 48000 \text{ cm}^3$ . Convert to litres: divide by 1000.
Marking Note: 4 marks for correct answer with unit and working. 3 marks for correct volume but wrong/no conversion. 2 marks for correct method with calculation error. 1 mark for attempt.

End of Answer Key