AI Generated Exam Paper
Primary 4 Mathematics Practice Paper 2
Free P4 Maths Practice Paper 2, LongCat AI version, with questions, answers, and syllabus-aligned practice for Singapore students.
These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.
Questions
Free quiz and exam paper access
Enter your details to view this paper
Your access is remembered on this device.
Answers
TuitionGoWhere Practice Paper — Answer Key
Mathematics Primary 4 | Whole Numbers | Version 2 of 5
Section A: Place Value and Number Sense (10 marks)
1. Write in figures: Seventy-three thousand, four hundred and six
Answer: 73,406 [2 marks]
Method: 7 ten-thousands = 70,000; 3 thousands = 3,000; 4 hundreds = 400; 0 tens; 6 ones → 73,406.
Common mistake: Writing 73,460 (confusing tens and ones) or 7,346 (missing a digit place).
2. In 58,294, what does the digit 8 stand for?
Answer: 8,000 (or eight thousand) [2 marks]
Method: The digit 8 is in the thousands place. 8 × 1,000 = 8,000.
Common mistake: Writing just "8" instead of its value "8,000". The question asks what the digit stands for, not the digit itself.
3. Arrange in order (smallest first): 42,107 | 41,999 | 42,017 | 41,709
Answer: 41,709, 41,999, 42,017, 42,107 [2 marks]
Method: Compare ten-thousands digit first (all are 4). Then compare thousands: 1 < 2, so 41,709 and 41,999 come first. Between those, 7 < 9 in the hundreds place, so 41,709 < 41,999. For the 42,xxx numbers: 0 < 1 in the hundreds place, so 42,017 < 42,107.
Marking: Award 2 marks for all correct. Award 1 mark if only one pair is swapped.
4. Fill in the missing number: 35,200, 35,300, 35,400, ________, 35,600
Answer: 35,500 [2 marks]
Method: The pattern increases by 100 each time. 35,400 + 100 = 35,500.
5. Value of the digit in the hundreds place in 60,835?
Answer: 800 [2 marks]
Method: In 60,835, the digits from left to right are: 6 (ten thousands), 0 (thousands), 8 (hundreds), 3 (tens), 5 (ones). The hundreds digit is 8, so its value is 8 × 100 = 800.
Section B: Rounding Numbers (10 marks)
6. Round 27,463 to the nearest hundred.
Answer: 27,500 [2 marks]
Method: Look at the tens digit (6). Since 6 ≥ 5, round up the hundreds digit: 4 becomes 5. Replace tens and ones with zeros → 27,500.
7. Round 83,550 to the nearest thousand.
Answer: 84,000 [2 marks]
Working: Look at the hundreds digit (5). Since 5 ≥ 5, round up the thousands digit: 3 becomes 4. Replace hundreds, tens, and ones with zeros → 84,000.
Common mistake: Writing 83,000 (forgetting to round up when the digit is exactly 5).
8. A number rounded to the nearest ten is 45,020. What is the smallest possible value?
Answer: 45,015 [2 marks]
Method: When rounding to the nearest ten, the smallest number that rounds up to 45,020 is the number where the ones digit is 5 (the threshold for rounding up). So the smallest possible value is 45,015.
Explanation: Any number from 45,015 to 45,024 rounds to 45,020. The smallest is 45,015.
9. 61,748 rounded to the nearest thousand ≈ ?
Answer: 61,748 ≈ 62,000 [2 marks]
Method: Look at the hundreds digit (7). Since 7 ≥ 5, round up the thousands digit: 1 becomes 2 → 62,000.
10. Round each to the nearest thousand.
(a) ArtScience Museum: 38,450 ≈ 38,000 [½ mark] Method: Hundreds digit is 4 (< 5), so round down.
(b) National Gallery: 52,380 ≈ 52,000 [½ mark] Method: Hundreds digit is 3 (< 5), so round down.
(c) Asian Civilisations Museum: 29,615 ≈ 30,000 [½ mark] Method: Hundreds digit is 6 (≥ 5), so round up.
(d) Singapore Philatelic Museum: 14,720 ≈ 15,000 [½ mark] Method: Hundreds digit is 7 (≥ 5), so round up.
Total: 2 marks. Award 1 mark if 2–3 are correct.
Section C: Comparing, Ordering and Problem Solving (20 marks)
11. 99,999 ☐ 100,000
Answer: 99,999 < 100,000 [1 mark]
Explanation: 99,999 is one less than 100,000.
12. 10,000 more than 45,678.
Answer: 55,678 [1 mark]
Method: 45,678 + 10,000 = 55,678. Adding 10,000 increases the ten-thousands digit by 1.
13. In 4□,382, the digit in the thousands place is 7. Find □.
Answer: □ = 7 [1 mark]
Method: In a five-digit number 4□,382, the places from left are: ten-thousands (4), thousands (□), hundreds (3), tens (8), ones (2). So □ = 7.
14. HDB town populations.
(a) Greatest population: Jurong West (262,730) [1 mark]
(b) Smallest population: Sengkang (249,550) [1 mark]
(c) Tampines rounded to nearest thousand: 258,310 → hundreds digit is 3 (< 5), so 258,000 [1 mark]
15. School fundraiser: ₹31,250 and ₹28,760.
(a) Estimated total (round to nearest thousand first):
31,250 → hundreds digit is 2 (< 5) → 31,000 28,760 → hundreds digit is 7 (≥ 5) → 29,000 Estimated total = 31,000 + 29,000 = ₹60,000 [2 marks]
Marking: Award 1 mark for correct rounding of both numbers, 1 mark for correct sum.
(b) Actual total: 31,250 + 28,760 = ₹60,010 [1 mark]
Working:
31,250
+ 28,760
--------
60,010
16. 5□,426 rounded to the nearest thousand is 56,000. Find possible values of □.
Answer: □ = 5, 6, 7, 8, or 9 [2 marks]
Working: The number is 5□,426. The thousands digit is □. The hundreds digit is 4.
- If □ = 5: 55,426 → hundreds digit is 4 (< 5), rounds to 55,000 ✗
- Wait — we need the result to be 56,000.
For the number to round to 56,000:
- The number must be between 55,500 and 56,499 (inclusive of 55,500, exclusive of 56,500).
- Since the number is 5□,426, the hundreds digit is fixed at 4, so the number is always 5□,426 where the last three digits are 426.
- For rounding to the nearest thousand: look at the hundreds digit (4). Since 4 < 5, we round down.
- So 5□,426 rounds to 5□,000. For this to equal 56,000, we need □ = 6.
Corrected Answer: □ = 6 [2 marks]
Working: The number is 5□,426. The hundreds digit is 4, which is less than 5, so we round down. This means 5□,426 → 5□,000. For this to equal 56,000, □ must be 6.
Common mistake: Students may think multiple values work, but since the hundreds digit is fixed at 4 (< 5), only □ = 6 gives 56,000.
Marking: Award 2 marks for correct answer with valid reasoning. Award 1 mark for correct answer without working.
17. Five-digit number with given digits.
(a) In figures: [1 mark]
Ten-thousands: 3, Thousands: 0, Hundreds: 7, Tens: 5, Ones: 9
Answer: 30,759
(b) In words: [1 mark]
Answer: Thirty thousand, seven hundred and fifty-nine
Common mistake: Writing "thirty thousand seven hundred fifty-nine" without "and" — accept both, but "and" before the tens/ones is standard in Singapore syllabus.
18. Singapore to Kuala Lumpur ≈ 354 km; Singapore to Penang ≈ 680 km.
Round to nearest hundred and estimate how much farther Penang is.
Working:
354 → tens digit is 5 (≥ 5), round up → 400 km 680 → tens digit is 8 (≥ 5), round up → 700 km
Estimated difference: 700 − 400 = 300 km [3 marks]
Marking: 1 mark for rounding 354 correctly, 1 mark for rounding 680 correctly, 1 mark for correct difference.
19. Warehouse boxes: 47,800 + 12,500 − 9,350.
(a) After Monday: 47,800 + 12,500 = 60,300 boxes [1 mark]
(b) After Tuesday: 60,300 − 9,350 = 50,950 boxes [1 mark]
Working:
60,300
- 9,350
--------
50,950
(c) 50,950 rounded to nearest thousand: hundreds digit is 9 (≥ 5), round up → 51,000 [1 mark]
20. Number pattern: 10,000 | 20,000 | 30,000 | ________ | 50,000 | ________ | 70,000
(a) Missing numbers: 40,000 and 60,000 [2 marks — 1 mark each]
(b) Rule: Add 10,000 each time (or "increase by 10,000") [1 mark]
Mark Summary
| Section | Marks |
|---|---|
| A: Place Value and Number Sense (Q1–5) | 10 |
| B: Rounding Numbers (Q6–10) | 10 |
| C: Comparing, Ordering and Problem Solving (Q11–20) | 20 |
| Total | 40 |
This practice paper was generated by TuitionGoWhere (AI) based on the 2021 MOE Primary Mathematics Syllabus. It is not derived from any actual past-year examination paper.