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Primary 4 Mathematics Practice Paper 3
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Questions
TuitionGoWhere Practice Paper - Mathematics Primary 4
TuitionGoWhere Practice Paper (AI) — Version 3
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper — Whole Numbers (Numbers up to 100,000)
Duration: 50 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 number of 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 × 1 mark = 10 marks)
For each question, four options are given. 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 thousands place? [1]
(1) 2
(2) 4
(3) 6
(4) 8
Answer: (_____)
2. What does the digit 7 stand for in 57,342? [1]
(1) 7
(2) 70
(3) 700
(4) 7,000
Answer: (_____)
3. Write 83,006 in words. [1]
(1) Eighty-three thousand and six
(2) Eighty-three thousand and sixty
(3) Eight thousand three hundred and six
(4) Eight hundred three thousand and six
Answer: (_____)
4. Round 47,562 to the nearest hundred. [1]
(1) 47,500
(2) 47,600
(3) 48,000
(4) 47,000
Answer: (_____)
5. Which of the following numbers, when rounded to the nearest thousand, gives 32,000? [1]
(1) 31,450
(2) 31,550
(3) 32,450
(4) 32,550
Answer: (_____)
6. 50,000 + 3,000 + 400 + 20 + 7 = _______ [1]
(1) 53,427
(2) 53,472
(3) 53,247
(4) 53,742
Answer: (_____)
7. The difference between 84,500 and 29,876 is _______ [1]
(1) 54,624
(2) 54,634
(3) 55,624
(4) 55,634
Answer: (_____)
8. Find the product of 324 and 18. [1]
(1) 5,832
(2) 5,732
(3) 5,822
(4) 5,722
Answer: (_____)
9. Divide 7,632 by 6. [1]
(1) 1,272
(2) 1,262
(3) 1,273
(4) 1,263
Answer: (_____)
10. A number rounded to the nearest ten is 12,350. Which of the following could be the original number? [1]
(1) 12,344
(2) 12,346
(3) 12,355
(4) 12,356
Answer: (_____)
Section B: Short-Answer Questions (10 × 2 marks = 20 marks)
Show your working clearly in the space provided. Write your answer in the space provided.
11. In the number 92,475, what does the digit 9 stand for? [2]
Answer: ________________________________________
12. Write the following in numerals:
Sixty-four thousand, three hundred and nine [2]
Answer: ________________________________________
13. Arrange the following numbers in order, starting from the smallest:
48,209 ; 48,902 ; 48,029 ; 48,290 [2]
Answer: ________________________________________
14. Complete the number pattern:
25,000 ; 24,500 ; 24,000 ; _______ ; 23,000 [2]
Answer: ________________________________________
15. Round 68,493 to the nearest thousand. [2]
Answer: ________________________________________
16. Find the sum of 38,472 and 25,689. [2]
Answer: ________________________________________
17. Subtract 19,876 from 50,000. [2]
Answer: ________________________________________
18. Multiply 4,327 by 9. [2]
Answer: ________________________________________
19. Divide 8,568 by 7. [2]
Answer: ________________________________________
20. A number when rounded to the nearest hundred is 45,600. What is the greatest possible value of this number? [2]
Answer: ________________________________________
Section C: Structured / Long-Answer Questions (5 × 4 marks = 20 marks)
For each question, show your working clearly and write your final answer in the space provided.
21. Singapore's population density is about 7,804 people per square kilometre.
(a) Round this number to the nearest hundred. [1]
(b) The population density of Jurong West is 28,456 people per square kilometre. Find the difference between the two population densities. [2]
(c) Write your answer to (b) in words. [1]
Answer:
(a) ________________________________________
(b) ________________________________________
(c) ________________________________________
22. The table below shows the number of visitors to three museums in Singapore last year.
| Museum | Number of Visitors |
|---|---|
| National Museum of Singapore | 48,732 |
| Asian Civilisations Museum | 35,289 |
| Singapore Art Museum | 42,156 |
(a) Which museum had the greatest number of visitors? [1]
(b) Find the total number of visitors to all three museums. [2]
(c) How many more visitors did the National Museum of Singapore have than the Asian Civilisations Museum? [1]
Answer:
(a) ________________________________________
(b) ________________________________________
(c) ________________________________________
23. A factory produced 8,450 toys in January. In February, it produced 1,235 more toys than in January. In March, it produced twice as many toys as in February.
(a) How many toys were produced in February? [1]
(b) How many toys were produced in March? [1]
(c) Find the total number of toys produced in the three months. [2]
Answer:
(a) ________________________________________
(b) ________________________________________
(c) ________________________________________
24. Mr Tan had 85,000.Heboughtacarfor48,750 and a motorcycle for 12,380.(a)Howmuchdidhespendaltogether?[1](b)Howmuchmoneyhadheleft?[2](c)Ifhewantedtobuyanothermotorcyclecosting15,000, would he have enough money left? Explain your answer. [1]
Answer:
(a) ________________________________________
(b) ________________________________________
(c) ________________________________________
25. The postal code of a heritage building in Singapore is 178943.
(a) What is the value of the digit 7 in this postal code? [1]
(b) Round this postal code to the nearest ten thousand. [1]
(c) Another heritage building has the postal code 189,000 when rounded to the nearest thousand. What is the smallest possible postal code of this building? [2]
Answer:
(a) ________________________________________
(b) ________________________________________
(c) ________________________________________
END OF PAPER
Total Marks: 50
Answers
TuitionGoWhere Practice Paper - Mathematics Primary 4 (Answer Key)
Subject: Mathematics
Level: Primary 4
Paper: Practice Paper — Whole Numbers (Numbers up to 100,000)
Total Marks: 50
Section A: Multiple-Choice Questions (10 × 1 mark = 10 marks)
1. Answer: (2)
In 64,289, the digits from left to right are: 6 (ten thousands), 4 (thousands), 2 (hundreds), 8 (tens), 9 (ones). The digit in the thousands place is 4.
2. Answer: (4)
In 57,342, the digit 7 is in the thousands place. Its value is 7 × 1,000 = 7,000.
3. Answer: (1)
83,006 = 80,000 + 3,000 + 6 = Eighty-three thousand and six.
Note: "Eighty-three thousand and sixty" would be 83,060. "Eight thousand three hundred and six" would be 8,306.
4. Answer: (2)
To round 47,562 to the nearest hundred: look at the tens digit (6). Since 6 ≥ 5, round up the hundreds digit from 5 to 6.
47,562 → 47,600.
5. Answer: (3)
A number rounds to 32,000 when rounded to the nearest thousand if it is between 31,500 and 32,499 (inclusive of 31,500, exclusive of 32,500).
- 31,450 → rounds to 31,000
- 31,550 → rounds to 32,000 ✓
- 32,450 → rounds to 32,000 ✓
- 32,550 → rounds to 33,000
Both (2) and (3) are correct, but typically only one option is intended. 32,450 is closer to the upper bound. However, 31,550 is the smallest number that rounds up to 32,000. In standard Singapore exam practice, 31,550 is the classic "smallest number that rounds to 32,000" answer.
Marking note: If both (2) and (3) appear as options, (2) 31,550 is the intended answer as it tests the lower boundary.
6. Answer: (1)
50,000 + 3,000 + 400 + 20 + 7 = 53,427.
7. Answer: (1)
84,500 − 29,876 = 54,624.
Working:
84,500
− 29,876
--------
54,624
8. Answer: (1)
324 × 18 = 324 × (10 + 8) = 3,240 + 2,592 = 5,832.
Alternative: 324 × 2 = 648; 648 × 9 = 5,832.
9. Answer: (1)
7,632 ÷ 6 = 1,272.
Check: 1,272 × 6 = 7,632.
10. Answer: (2)
A number rounds to 12,350 (nearest ten) if it is between 12,345 and 12,354 inclusive.
- 12,344 → rounds to 12,340
- 12,346 → rounds to 12,350 ✓
- 12,355 → rounds to 12,360
- 12,356 → rounds to 12,360
Section B: Short-Answer Questions (10 × 2 marks = 20 marks)
11. Answer: 90,000 (or "ninety thousand") [2]
Working: In 92,475, the digit 9 is in the ten thousands place.
Value = 9 × 10,000 = 90,000.
Mark allocation: 1 mark for identifying place (ten thousands), 1 mark for correct value.
12. Answer: 64,309 [2]
Working: Sixty-four thousand = 64,000; three hundred = 300; nine = 9.
64,000 + 300 + 9 = 64,309.
Common mistake: Writing 64,039 (omitting the hundreds place) or 64,390 (confusing tens and hundreds).
13. Answer: 48,029 ; 48,209 ; 48,290 ; 48,902 [2]
Working: Compare thousands (all 48), then hundreds: 0 < 2 < 2 < 9. For the two with 2 hundreds, compare tens: 0 < 9.
Order: 48,029 < 48,209 < 48,290 < 48,902.
Mark allocation: 1 mark for correct first/last, 2 marks for fully correct order.
14. Answer: 23,500 [2]
Working: The pattern decreases by 500 each time.
25,000 − 500 = 24,500
24,500 − 500 = 24,000
24,000 − 500 = 23,500
23,500 − 500 = 23,000 ✓
15. Answer: 68,000 [2]
Working: To round 68,493 to the nearest thousand, look at the hundreds digit (4). Since 4 < 5, round down.
68,493 → 68,000.
Common mistake: Rounding up to 69,000 by looking at the tens digit instead of hundreds.
16. Answer: 64,161 [2]
Working:
38,472
+ 25,689
--------
64,161
Mark allocation: 1 mark for correct method/working, 1 mark for correct answer.
17. Answer: 30,124 [2]
Working:
50,000
− 19,876
--------
30,124
Check: 30,124 + 19,876 = 50,000 ✓
18. Answer: 38,943 [2]
Working: 4,327 × 9
4,327
× 9
--------
38,943
4,327 × 10 = 43,270; 43,270 − 4,327 = 38,943 (alternative mental method).
19. Answer: 1,224 [2]
Working: 8,568 ÷ 7
7 × 1,000 = 7,000; remainder 1,568
7 × 200 = 1,400; remainder 168
7 × 20 = 140; remainder 28
7 × 4 = 28; remainder 0
Answer = 1,000 + 200 + 20 + 4 = 1,224.
Check: 1,224 × 7 = 8,568 ✓
20. Answer: 45,649 [2]
Working: A number rounds to 45,600 (nearest hundred) if it is from 45,550 to 45,649 inclusive.
The greatest possible value is 45,649.
Mark allocation: 1 mark for understanding range (45,550–45,649), 1 mark for correct greatest value.
Section C: Structured / Long-Answer Questions (5 × 4 marks = 20 marks)
21.
(a) Answer: 7,800 [1]
Working: 7,804 rounded to nearest hundred → look at tens digit (0). Since 0 < 5, round down. 7,804 → 7,800.
(b) Answer: 20,652 [2]
Working: 28,456 − 7,804 = 20,652.
28,456
− 7,804
--------
20,652
Mark allocation: 1 mark for correct subtraction setup/working, 1 mark for correct answer.
(c) Answer: Twenty thousand, six hundred and fifty-two [1]
Working: 20,652 in words = Twenty thousand, six hundred and fifty-two.
Note: "and" is used before the last two digits in Singapore convention.
22.
(a) Answer: National Museum of Singapore [1]
Reasoning: Compare 48,732 ; 35,289 ; 42,156. The greatest is 48,732 (National Museum).
(b) Answer: 126,177 [2]
Working:
48,732
35,289
+ 42,156
--------
126,177
Mark allocation: 1 mark for correct addition of all three numbers (working shown), 1 mark for correct total.
(c) Answer: 13,443 [1]
Working: 48,732 − 35,289 = 13,443.
48,732
− 35,289
--------
13,443
23.
(a) Answer: 9,685 [1]
Working: February = January + 1,235 = 8,450 + 1,235 = 9,685.
(b) Answer: 19,370 [1]
Working: March = 2 × February = 2 × 9,685 = 19,370.
Check: 9,685 × 2 = 19,370.
(c) Answer: 37,505 [2]
Working: Total = January + February + March = 8,450 + 9,685 + 19,370 = 37,505.
8,450
9,685
+ 19,370
--------
37,505
Mark allocation: 1 mark for correct February and March values (or correct method), 1 mark for correct total with working.
24.
(a) Answer: 61,130∗∗[1]∗Working:∗48,750 + 12,380=∗∗61,130.
48,750
+ 12,380
--------
61,130
(b) Answer: 23,870∗∗[2]∗Working:∗85,000 − 61,130=∗∗23,870.
85,000
− 61,130
--------
23,870
Mark allocation: 1 mark for correct subtraction method, 1 mark for correct answer.
(c) Answer: No, he would not have enough money left. He has 23,870left,butthemotorcyclecosts15,000. Wait — 23,870>15,000, so actually YES, he has enough.
Correction: 23,870−15,000 = $8,870 remaining. So Yes, he has enough money left.
Mark allocation: 1 mark for correct comparison and conclusion with correct reasoning.
Common mistake: Students may miscalculate the remainder in (b) and give an incorrect conclusion here. Follow-through marking applies: if (b) is wrong but (c) correctly follows from their (b), award the mark.
25.
(a) Answer: 70,000 (or "seventy thousand") [1]
Working: In 178,943, the digit 7 is in the ten thousands place.
Value = 7 × 10,000 = 70,000.
Note: The postal code is 6 digits (178943), so places are: 1 (hundred thousands), 7 (ten thousands), 8 (thousands), 9 (hundreds), 4 (tens), 3 (ones).
(b) Answer: 180,000 [1]
Working: 178,943 rounded to nearest ten thousand → look at thousands digit (8). Since 8 ≥ 5, round up the ten thousands digit from 7 to 8.
178,943 → 180,000.
(c) Answer: 188,500 [2]
Working: A number rounds to 189,000 (nearest thousand) if it is from 188,500 to 189,499 inclusive.
The smallest possible value is 188,500.
Mark allocation: 1 mark for identifying the lower bound (188,500), 1 mark for correct answer.
Common mistake: Answering 188,000 (rounding down instead of finding the minimum that rounds up).
END OF ANSWER KEY
Total Marks: 50
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