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Primary 4 Mathematics Practice Paper 4
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Questions
TuitionGoWhere Practice Paper - Mathematics Primary 4
TuitionGoWhere Practice Paper (AI) — Version 4
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper 4 (Whole Numbers Focus)
Duration: 1 hour 15 minutes
Total Marks: 50
Name: ___________________________
Class: Primary 4 _______
Date: _______________
Instructions to Candidates
- Do not open this booklet until you are told to do so.
- Follow all instructions carefully.
- Answer all questions.
- Write your answers in this booklet.
- The number of marks is given in brackets [ ] at the end of each question or part question.
- The total marks for this paper is 50.
- You may use a calculator for this paper.
- Show all working clearly in the space provided.
Section A: Multiple-Choice Questions (10 marks)
Questions 1 to 5 carry 2 marks each. Choose the correct answer and write its number (1, 2, 3 or 4) in the brackets provided.
1. In the number 64,289, which digit is in the ten thousands place? [2]
(1) 2
(2) 4
(3) 6
(4) 9
Answer: (_____)
2. What does the digit 7 stand for in 57,304? [2]
(1) 7
(2) 70
(3) 700
(4) 7,000
Answer: (_____)
3. Round 38,642 to the nearest hundred. [2]
(1) 38,600
(2) 38,700
(3) 39,000
(4) 38,640
Answer: (_____)
4. Which of the following numbers when rounded to the nearest thousand gives 45,000? [2]
(1) 44,399
(2) 44,501
(3) 45,499
(4) 45,500
Answer: (_____)
5. The number of visitors to Gardens by the Bay in June was 82,457. Round this number to the nearest ten thousand. [2]
(1) 80,000
(2) 82,000
(3) 83,000
(4) 90,000
Answer: (_____)
Section B: Short Answer Questions (20 marks)
Questions 6 to 15 carry 2 marks each. Write your answers in the spaces provided. Show your working clearly.
6. Write sixty-three thousand and forty-two in numerals. [2]
Answer: _______________________
7. In the number 92,507, what is the value of the digit 2? [2]
Answer: _______________________
8. Arrange the following numbers from the smallest to the greatest. [2]
48,921 ; 48,291 ; 49,821 ; 48,192
Answer: _______________________
9. Complete the number pattern. [2]
24,500 ; 25,000 ; 25,500 ; ________ ; 26,500
Answer: _______________________
10. Round 76,483 to the nearest thousand. [2]
Answer: _______________________
11. A number rounded to the nearest hundred is 52,300. What is the greatest possible value of this number? [2]
Answer: _______________________
12. Find the sum of 34,567 and 28,432. [2]
Answer: _______________________
13. Subtract 19,876 from 50,000. [2]
Answer: _______________________
14. Multiply 4,328 by 7. [2]
Answer: _______________________
15. Divide 36,456 by 6. [2]
Answer: _______________________
Section C: Problem Sums (20 marks)
Questions 16 to 20 carry 4 marks each. Show your working clearly and write your final answers in the spaces provided.
16. The table below shows the number of books borrowed from three school libraries in Term 1. [4]
| Library | Number of Books Borrowed |
|---|---|
| North Library | 12,456 |
| East Library | 15,789 |
| West Library | 9,876 |
(a) How many more books were borrowed from East Library than West Library?
(b) What is the total number of books borrowed from all three libraries?
Answer (a): _______________________
Answer (b): _______________________
17. Mr Tan bought a car for 15,000 and paid the rest in 8 equal monthly instalments. [4]
(a) How much did he still owe after paying the deposit?
(b) How much was each monthly instalment?
Answer (a): _______________________
Answer (b): _______________________
18. A factory produced 45,680 toys in January. In February, it produced 3,420 fewer toys than in January. In March, it produced twice as many toys as in February. [4]
(a) How many toys were produced in February?
(b) How many toys were produced in March?
Answer (a): _______________________
Answer (b): _______________________
19. There are 52,348 people living in a housing estate. 18,456 are men and 19,234 are women. The rest are children. [4]
(a) How many children are there in the housing estate?
(b) If 5,678 children moved out, how many children would be left?
Answer (a): _______________________
Answer (b): _______________________
20. A concert hall has 8,456 seats. For a concert, 6,789 seats were occupied. [4]
(a) How many seats were empty?
(b) If each ticket cost $25, how much money was collected from ticket sales?
Answer (a): _______________________
Answer (b): _______________________
END OF PAPER
Answers
TuitionGoWhere Practice Paper - Mathematics Primary 4 (Answer Key)
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper 4 (Whole Numbers Focus)
Total Marks: 50
Section A: Multiple-Choice Questions (10 marks)
1. Answer: (3) 6 [2]
Explanation: In the number 64,289, the digits from left to right are: 6 (ten thousands), 4 (thousands), 2 (hundreds), 8 (tens), 9 (ones). The digit in the ten thousands place is 6.
2. Answer: (4) 7,000 [2]
Explanation: In 57,304, the digit 7 is in the thousands place. Its value is 7 × 1,000 = 7,000.
3. Answer: (2) 38,700 [2]
Explanation: To round 38,642 to the nearest hundred, look at the tens digit (4). Since 4 < 5, we round down. The hundreds digit (6) stays the same, and the tens and ones become 0. So 38,642 ≈ 38,600.
Wait — correction: 38,642 has tens digit 4, so we round down to 38,600. But option (2) is 38,700. Let me re-check: 38,642 → hundreds digit is 6, tens digit is 4. Since 4 < 5, round down → 38,600. But 38,600 is not an option. Option (1) is 38,600. So the correct answer should be (1) 38,600.
Corrected Answer: (1) 38,600
Marking Note: The tens digit is 4 (< 5), so round down. The hundreds digit remains 6.
3. Answer: (1) 38,600 [2]
Explanation: To round 38,642 to the nearest hundred, look at the tens digit (4). Since 4 < 5, we round down. The hundreds digit (6) stays the same, and the tens and ones become 0. So 38,642 ≈ 38,600.
4. Answer: (3) 45,499 [2]
Explanation: A number rounds to 45,000 when rounded to the nearest thousand if it is between 44,500 and 45,499 (inclusive of 44,500, exclusive of 45,500).
- 44,399 rounds to 44,000 (hundreds digit 3 < 5)
- 44,501 rounds to 45,000 (hundreds digit 5 ≥ 5)
- 45,499 rounds to 45,000 (hundreds digit 4 < 5)
- 45,500 rounds to 46,000 (hundreds digit 5 ≥ 5)
The greatest number in the options that rounds to 45,000 is 45,499.
5. Answer: (1) 80,000 [2]
Explanation: To round 82,457 to the nearest ten thousand, look at the thousands digit (2). Since 2 < 5, we round down. The ten thousands digit (8) stays the same, and all digits to the right become 0. So 82,457 ≈ 80,000.
Section B: Short Answer Questions (20 marks)
6. Answer: 63,042 [2]
Explanation: "Sixty-three thousand" = 63,000. "Forty-two" = 42. Combined: 63,000 + 42 = 63,042.
Common mistake: Writing 63,42 (missing the zero placeholder in the hundreds place).
7. Answer: 2,000 [2]
Explanation: In 92,507, the digit 2 is in the thousands place. Its value is 2 × 1,000 = 2,000.
8. Answer: 48,192 ; 48,291 ; 48,921 ; 49,821 [2]
Explanation: Compare digit by digit from the left (ten thousands place). All have 4 in ten thousands. Compare thousands: all have 8. Compare hundreds: 1, 2, 9, 9. So 48,192 (1 hundred) is smallest, then 48,291 (2 hundreds). For 48,921 and 49,821, compare thousands: 8 vs 9, so 48,921 < 49,821.
9. Answer: 26,000 [2]
Explanation: The pattern increases by 500 each time:
24,500 + 500 = 25,000
25,000 + 500 = 25,500
25,500 + 500 = 26,000
26,000 + 500 = 26,500 ✓
10. Answer: 76,000 [2]
Explanation: To round 76,483 to the nearest thousand, look at the hundreds digit (4). Since 4 < 5, round down. The thousands digit (6) stays the same, and all digits to the right become 0. So 76,483 ≈ 76,000.
11. Answer: 52,349 [2]
Explanation: A number rounds to 52,300 when rounded to the nearest hundred if it is from 52,250 to 52,349. The greatest possible value is 52,349.
Check: 52,349 → tens digit is 4 (< 5), so rounds down to 52,300. 52,350 → tens digit is 5 (≥ 5), rounds up to 52,400.
12. Answer: 62,999 [2]
Working:
34,567
+ 28,432
--------
62,999
Explanation: Add column by column from right to left: 7+2=9, 6+3=9, 5+4=9, 4+8=12 (write 2, carry 1), 3+2+1=6.
13. Answer: 30,124 [2]
Working:
50,000
- 19,876
--------
30,124
Explanation: Subtract with regrouping. Since we cannot subtract 6 from 0 in the ones place, we regroup from the tens, but tens is also 0, so we keep regrouping from the ten thousands. 50,000 = 49,990 + 10. Then subtract: 10-6=4, 9-7=2, 9-8=1, 9-9=0, 4-1=3.
14. Answer: 30,296 [2]
Working:
4,328
× 7
--------
30,296
Explanation: Multiply each digit by 7 from right to left: 8×7=56 (write 6, carry 5), 2×7=14+5=19 (write 9, carry 1), 3×7=21+1=22 (write 2, carry 2), 4×7=28+2=30.
15. Answer: 6,076 [2]
Working:
6,076
6)36,456
-36
---
04
-0
---
45
-42
---
36
-36
---
0
Explanation: Long division: 36÷6=6, bring down 4 → 4÷6=0, bring down 5 → 45÷6=7 remainder 3, bring down 6 → 36÷6=6. Quotient = 6,076.
Section C: Problem Sums (20 marks)
16. [4]
(a) Answer: 5,913
Working: 15,789 − 9,876 = 5,913
Marks: 1 mark for correct subtraction, 1 mark for correct answer.
(b) Answer: 38,121
Working: 12,456 + 15,789 + 9,876 = 38,121
Marks: 1 mark for correct addition of all three numbers, 1 mark for correct answer.
Alternative: Add two first (12,456 + 15,789 = 28,245), then add the third (28,245 + 9,876 = 38,121).
17. [4]
**(a) Answer: 68,450 − 53,450
Marks: 1 mark for correct subtraction, 1 mark for correct answer with dollar sign.
**(b) Answer: 53,450 ÷ 8 = $6,681.25
Marks: 1 mark for correct division method, 1 mark for correct answer with dollar sign and 2 decimal places.
Note: Since this involves money, answer should be in dollars and cents (2 decimal places). 53,450 ÷ 8 = 6,681 remainder 2 → 6,681.25.
18. [4]
(a) Answer: 42,260
Working: 45,680 − 3,420 = 42,260
Marks: 1 mark for correct subtraction, 1 mark for correct answer.
(b) Answer: 84,520
Working: 42,260 × 2 = 84,520
Marks: 1 mark for correct multiplication (×2), 1 mark for correct answer.
19. [4]
(a) Answer: 14,658
Working: Total people = 52,348
Men + Women = 18,456 + 19,234 = 37,690
Children = 52,348 − 37,690 = 14,658
Marks: 1 mark for finding total adults (men + women), 1 mark for correct subtraction to find children.
(b) Answer: 8,980
Working: 14,658 − 5,678 = 8,980
Marks: 1 mark for correct subtraction, 1 mark for correct answer.
20. [4]
(a) Answer: 1,667
Working: 8,456 − 6,789 = 1,667
Marks: 1 mark for correct subtraction, 1 mark for correct answer.
**(b) Answer: 25 = $169,725
Marks: 1 mark for correct multiplication method, 1 mark for correct answer with dollar sign.
Check: 6,789 × 25 = 6,789 × 100 ÷ 4 = 678,900 ÷ 4 = 169,725.
Total Marks: 50
Marking Notes:
- For Section A, award 2 marks per correct answer, 0 for incorrect.
- For Section B, award 2 marks per fully correct answer. For Questions 12–15, 1 mark may be awarded for correct method with a calculation error.
- For Section C, each part carries 2 marks. Award 1 mark for correct method/working and 1 mark for correct final answer. Deduct ½ mark for missing units ($ or "people", "toys", "seats") where applicable.
- Accept alternative valid methods (e.g., mental math strategies, different order of operations) if working is shown and answer is correct.