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Primary 4 Mathematics Practice Paper 1
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Questions
TuitionGoWhere Practice Paper - Mathematics Primary 4
TuitionGoWhere Practice Paper (AI) — Version 1
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper 1 (Whole Numbers Focus)
Duration: 45 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.
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 68,429, which digit is in the thousands place? [2] (1) 6 (2) 8 (3) 4 (4) 2 Answer: (____)
2. Round 47,385 to the nearest thousand. [2] (1) 47,000 (2) 47,400 (3) 48,000 (4) 50,000 Answer: (____)
3. What is the value of the digit 5 in the number 35,721? [2] (1) 5 (2) 50 (3) 500 (4) 5000 Answer: (____)
4. Which of the following numbers when rounded to the nearest hundred gives 29,500? [2] (1) 29,449 (2) 29,450 (3) 29,549 (4) 29,550 Answer: (____)
5. The difference between 84,000 and 36,729 is ____. [2] (1) 47,271 (2) 47,371 (3) 48,271 (4) 48,371 Answer: (__)
Section B: Short Answer Questions (20 marks)
Questions 6 to 15 carry 2 marks each. Show your working clearly and write your answers in the spaces provided.
6. Write ninety-two thousand, three hundred and seven in numerals. [2] Answer: ________________________
7. In the number 54,816, what does the digit 8 stand for? [2] Answer: ________________________
8. Round 63,942 to the nearest ten. [2] Answer: ________________________
9. Find the sum of 28,475 and 46,389. [2] Answer: ________________________
10. Subtract 19,583 from 50,000. [2] Answer: ________________________
11. What is the missing number in the pattern below? [2] 12,000, 14,500, 17,000, ______, 22,000 Answer: ________________________
12. A number when rounded to the nearest thousand is 38,000. What is the greatest possible value of this number? [2] Answer: ________________________
13. In the number 70,503, the digit 7 is in the _______________ place. [2] Answer: ________________________
14. Arrange the following numbers in order, starting from the smallest. [2] 45,892 ; 45,982 ; 48,592 ; 48,952 Answer: ________________________
15. The product of 248 and 35 is ______. [2] Answer: ________________________
Section C: Structured / Long-Answer Questions (20 marks)
Questions 16 to 20 carry 4 marks each. Show your working clearly and write your answers in the spaces provided.
16. Singapore's population density is about 8,358 people per square kilometre. (a) Round this number to the nearest hundred. [1] (b) If Jurong West has a population of 27,845, what is the difference between the population density and Jurong West's population? [2] (c) Write your answer to (b) in words. [1]
Answer (a): ________________________ Answer (b): ________________________ Answer (c): ________________________
17. The table below shows the number of visitors to three museums in Singapore last year.
| Museum | Number of Visitors |
|---|---|
| National Museum | 48,725 |
| ArtScience Museum | 52,318 |
| Asian Civilisations Museum | 39,467 |
(a) Which museum had the greatest number of visitors? [1] (b) Round the number of visitors to the ArtScience Museum to the nearest thousand. [1] (c) Find the total number of visitors to the National Museum and the Asian Civilisations Museum. [2]
Answer (a): ________________________ Answer (b): ________________________ Answer (c): ________________________
18. A factory produced 45,680 toys in January. In February, it produced 12,345 fewer toys than in January. (a) How many toys were produced in February? [2] (b) What was the total number of toys produced in the two months? [2]
Answer (a): ________________________ Answer (b): ________________________
19. Study the number pattern below. 5,000 ; 7,500 ; 10,000 ; 12,500 ; ______ ; ______ (a) What are the next two numbers in the pattern? [2] (b) Explain the rule of the pattern. [2]
Answer (a): ________________________ Answer (b): ________________________
20. Mr Tan has 48,750 and a motorcycle for $12,380. (a) How much money does he spend altogether? [2] (b) How much money does he have left? [2]
Answer (a): ________________________ Answer (b): ________________________
End of Paper
Answers
TuitionGoWhere Practice Paper - Mathematics Primary 4 (Answer Key)
TuitionGoWhere Practice Paper (AI) — Version 1
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper 1 (Whole Numbers Focus)
Total Marks: 50
Section A: Multiple-Choice Questions (10 marks)
1. Answer: (2) 8
Explanation: In the number 68,429, the digits from left to right are: 6 (ten thousands), 8 (thousands), 4 (hundreds), 2 (tens), 9 (ones). The digit in the thousands place is 8.
Marking: 2 marks for correct option.
2. Answer: (3) 48,000
Explanation: To round 47,385 to the nearest thousand, look at the hundreds digit (3). Since 3 < 5, we round down. 47,385 rounded to the nearest thousand is 47,000.
Correction: Wait, 47,385 — the thousands digit is 7, the hundreds digit is 3. Since hundreds digit (3) is less than 5, we round down to 47,000. But option (1) is 47,000. Let me recheck.
Actually: 47,385 → thousands digit is 7, next digit (hundreds) is 3. 3 < 5, so round down → 47,000.
Correct Answer: (1) 47,000
Marking: 2 marks for correct option.
3. Answer: (4) 5000
Explanation: In 35,721, the digit 5 is in the thousands place. Its value is 5 × 1000 = 5000.
Marking: 2 marks for correct option.
4. Answer: (3) 29,549
Explanation: When rounding to the nearest hundred, we look at the tens digit. For a number to round to 29,500, it must be from 29,450 to 29,549. Among the options, 29,549 is the only one in this range.
- 29,449 → rounds to 29,400 (tens digit 4 < 5)
- 29,450 → rounds to 29,500 (tens digit 5 ≥ 5)
- 29,549 → rounds to 29,500 (tens digit 4 < 5)
- 29,550 → rounds to 29,600 (tens digit 5 ≥ 5)
Marking: 2 marks for correct option.
5. Answer: (1) 47,271
Explanation: 84,000 − 36,729 = 47,271.
Working:
84,000
− 36,729
--------
47,271
Marking: 2 marks for correct option.
Section B: Short Answer Questions (20 marks)
6. Answer: 92,307
Explanation: "Ninety-two thousand" = 92,000; "three hundred" = 300; "seven" = 7. Combined: 92,000 + 300 + 7 = 92,307.
Marking: 2 marks (1 mark for correct digits, 1 mark for correct placement/comma).
7. Answer: 800
Explanation: In 54,816, the digit 8 is in the hundreds place. Its value is 8 × 100 = 800.
Marking: 2 marks.
8. Answer: 63,940
Explanation: To round 63,942 to the nearest ten, look at the ones digit (2). Since 2 < 5, round down. The tens digit (4) stays the same, ones become 0.
Marking: 2 marks.
9. Answer: 74,864
Explanation:
28,475
+ 46,389
--------
74,864
Marking: 2 marks (1 mark for correct method/working, 1 mark for correct answer).
10. Answer: 30,417
Explanation:
```
50,000
− 19,583
30,417
```
**Marking:** 2 marks (1 mark for correct method/working, 1 mark for correct answer).
11. Answer: 19,500
Explanation: The pattern increases by 2,500 each time:
12,000 + 2,500 = 14,500
14,500 + 2,500 = 17,000
17,000 + 2,500 = 19,500
19,500 + 2,500 = 22,000 ✓
Marking: 2 marks.
12. Answer: 38,499
Explanation: When rounding to the nearest thousand gives 38,000, the number must be from 37,500 to 38,499. The greatest possible value is 38,499.
Marking: 2 marks.
13. Answer: ten thousands
Explanation: In 70,503, the digits are: 7 (ten thousands), 0 (thousands), 5 (hundreds), 0 (tens), 3 (ones). The digit 7 is in the ten thousands place.
Marking: 2 marks.
14. Answer: 45,892 ; 45,982 ; 48,592 ; 48,952
Explanation: Compare ten thousands: all have 4. Compare thousands: 5 and 8. Numbers with 5 thousands (45,892 and 45,982) are smaller than those with 8 thousands (48,592 and 48,952). Within 45,xxx: compare hundreds (8 vs 9) → 45,892 < 45,982. Within 48,xxx: compare hundreds (5 vs 9) → 48,592 < 48,952.
Marking: 2 marks (all four in correct order).
15. Answer: 8,680
Explanation: 248 × 35 = 248 × (30 + 5) = (248 × 30) + (248 × 5) = 7,440 + 1,240 = 8,680.
Marking: 2 marks (1 mark for correct method, 1 mark for correct answer).
Section C: Structured / Long-Answer Questions (20 marks)
16.
(a) Answer: 8,400
Explanation: 8,358 rounded to the nearest hundred: look at tens digit (5). Since 5 ≥ 5, round up the hundreds digit (3 → 4). Result: 8,400.
Marks: 1 mark.
(b) Answer: 19,487
Explanation: Difference = 8,358 − 27,845? Wait — the question says "difference between the population density and Jurong West's population". Population density is 8,358 people/km². Jurong West population is 27,845. Difference = 27,845 − 8,358 = 19,487. (We subtract the smaller from the larger for difference.)
Working:
27,845 − 8,358 -------- 19,487
Marks: 2 marks (1 mark for correct subtraction setup, 1 mark for correct answer).
(c) Answer: nineteen thousand, four hundred and eighty-seven
Explanation: Write 19,487 in words: nineteen thousand, four hundred and eighty-seven.
Marks: 1 mark.
17.
(a) Answer: ArtScience Museum
Explanation: Compare visitor numbers: 48,725 (National), 52,318 (ArtScience), 39,467 (Asian Civilisations). 52,318 is the greatest.
Marks: 1 mark.
(b) Answer: 52,000
Explanation: 52,318 rounded to the nearest thousand: look at hundreds digit (3). Since 3 < 5, round down → 52,000.
Marks: 1 mark.
(c) Answer: 88,192
Explanation: Total = 48,725 + 39,467 = 88,192.
Working:
48,725 + 39,467 -------- 88,192
Marks: 2 marks (1 mark for correct addition setup, 1 mark for correct answer).
18.
(a) Answer: 33,335
Explanation: February production = January production − 12,345 = 45,680 − 12,345 = 33,335.
Working:
45,680 − 12,345 -------- 33,335
Marks: 2 marks (1 mark for correct subtraction, 1 mark for correct answer).
(b) Answer: 79,015
Explanation: Total = January + February = 45,680 + 33,335 = 79,015.
Working:
45,680 + 33,335 -------- 79,015
Marks: 2 marks (1 mark for correct addition using answer from (a), 1 mark for correct answer).
Note: If (a) is wrong but (b) correctly adds January + (a), award 1 mark for method.
19.
(a) Answer: 15,000 ; 17,500
Explanation: The pattern increases by 2,500 each step:
5,000 + 2,500 = 7,500
7,500 + 2,500 = 10,000
10,000 + 2,500 = 12,500
12,500 + 2,500 = 15,000
15,000 + 2,500 = 17,500
Marks: 2 marks (1 mark each for correct numbers).
(b) Answer: The pattern increases by 2,500 each time.
Explanation: Each number is 2,500 more than the previous number. This is a constant difference pattern (arithmetic sequence).
Marks: 2 marks (1 mark for identifying "increase", 1 mark for stating "2,500" or "two thousand five hundred").
20.
(a) **Answer: 48,750 + 61,130.
Working:
$48,750 + $12,380 --------- $61,130
Marks: 2 marks (1 mark for correct addition setup, 1 mark for correct answer with $ sign).
(b) *Answer: 85,000 − 23,870.
Working:
$85,000 − $61,130 --------- $23,870
Marks: 2 marks (1 mark for correct subtraction setup using answer from (a), 1 mark for correct answer with 85,000, award 1 mark for method.
Total Marks: 50
End of Answer Key