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Primary 4 Mathematics Whole Numbers Quiz
Free P4 Maths Whole Numbers quiz with questions, answers, and syllabus-aligned practice for Singapore students preparing for school assessments.
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Questions
Primary 4 Mathematics Quiz - Whole Numbers
Name: _______________________________ Class: ___________ Date: ___________
Duration: 40 minutes
Total Marks: 40 marks
Instructions: Answer all questions. Show your working clearly. Calculators are not allowed.
Section A: Multiple Choice (Questions 1-5)
Choose the correct answer. Each question carries 1 mark.
1. What does the digit 7 stand for in the number 47,293?
A) 7
B) 70
C) 700
D) 7,000
Answer: _______________
2. Which of the following is seventy-two thousand and eight written in figures?
A) 72,008
B) 72,080
C) 72,800
D) 7,208
Answer: _______________
3. Round 86,514 to the nearest thousand.
A) 86,000
B) 86,500
C) 87,000
D) 90,000
Answer: _______________
4. Which number is the greatest?
A) 58,964
B) 59,048
C) 58,999
D) 59,004
Answer: _______________
5. In the number pattern below, what is the missing number?
37,250, 37,500, _______, 38,000, 38,250
A) 37,650
B) 37,750
C) 37,850
D) 37,950
Answer: _______________
Section B: Short Answer (Questions 6-14)
Answer each question in the space provided. Show your working.
6. Write 63,049 in words.
[2 marks]
7. In the number 84,726, which digit is in the ten thousands place?
What does this digit stand for?
[2 marks]
8. Arrange these numbers from smallest to largest: 45,832; 45,283; 45,382; 45,238
[2 marks]
9. Round 49,607 to: (a) the nearest ten [1 mark] (b) the nearest hundred [1 mark] (c) the nearest thousand [1 mark]
10. Complete the number pattern: 12,450, 13,450, _______, 15,450, _______
Explain the rule. [2 marks]
11. Find the sum of 24,368 and 18,947.
[2 marks]
12. Subtract 19,856 from 50,000.
[2 marks]
13. A school library has 34,250 books. After a book donation drive, the library has 41,875 books. How many books were donated?
[2 marks]
14. A factory produces 8,450 packets of noodles each day. How many packets does it produce in 5 days?
[2 marks]
Section C: Problem Solving (Questions 15-20)
Show all your working clearly. Each question carries 3 marks.
15. The population of Tampines estate is 56,483. The population of Bedok estate is 68,725.
(a) Round the population of Tampines to the nearest thousand. [1 mark]
(b) Find the difference between the two populations. [1 mark]
(c) A newspaper reported that "about 70,000 people live in Bedok." Do you agree? Explain your answer using the approximation symbol (≈). [1 mark]
16. <image_placeholder> id: Q16-fig1 type: table linked_question: Q16 description: A table showing the number of visitors to four Singapore museums in one month labels: Museum name, Number of visitors values: National Museum: 42,856; Singapore Art Museum: 28,947; Asian Civilisations Museum: 35,124; Science Centre Singapore: 51,638 must_show: Four rows with museum names and visitor numbers aligned in columns; title "Museum Visitors in July 2024" </image_placeholder>
Use the table above.
(a) Which museum had the most visitors? [1 mark]
(b) Round the number of visitors to the Science Centre Singapore to the nearest hundred. [1 mark]
(c) Find the total number of visitors to the National Museum and the Asian Civilisations Museum. [1 mark]
17. <image_placeholder> id: Q17-fig1 type: number_line linked_question: Q17 description: A number line from 60,000 to 70,000 showing marked positions labels: 60,000 and 70,000 at ends; Point A at 63,000; Point B at 67,500; Point C at 65,000; Point D at 62,000 values: Scale increments of 1,000 between major ticks; minor ticks every 500 must_show: Number line with 60,000 and 70,000 as endpoints; Points A, B, C, D clearly marked with letters above the line; evenly spaced tick marks </image_placeholder>
Use the number line above.
(a) What number does Point B represent? [1 mark]
(b) What is the difference between the numbers at Point A and Point D? [1 mark]
(c) Point E is halfway between Point B and 70,000. What number does Point E represent? [1 mark]
18. A point-of-sale system prints receipts with 5-digit transaction numbers. The first receipt of the day is numbered 24,750.
(a) What is the number on the 5th receipt? [1 mark]
(b) After printing 100 receipts, what is the last receipt number? [1 mark]
(c) If the system rounds each receipt number to the nearest hundred for reporting, what number would the 5th receipt be reported as? [1 mark]
19. <image_placeholder> id: Q19-fig1 type: diagram linked_question: Q19 description: A place value chart showing five columns with digits placed in some columns labels: Ten Thousands, Thousands, Hundreds, Tens, Ones as column headers; digits 6 and 4 shown in the Thousands and Ones columns respectively with other columns blank values: 6 in Thousands column, 4 in Ones column, blank columns for Ten Thousands, Hundreds, Tens must_show: Five-column place value chart with headers; digit 6 in Thousands column, digit 4 in Ones column; empty boxes for remaining places with dotted lines or blank spaces indicated </image_placeholder>
Use the place value chart above.
(a) Write the largest possible 5-digit number that can be made by filling in the empty boxes with the digits 2, 5, and 8 (use each digit once). [1 mark]
(b) Write the smallest possible 5-digit number that can be made by filling in the empty boxes with the digits 2, 5, and 8 (use each digit once). [1 mark]
(c) Round your answer in part (b) to the nearest thousand. [1 mark]
20. A school has three fund-raising campaigns.
- Campaign A raised $34,580
- Campaign B raised $8,750 more than Campaign A
- Campaign C raised $12,645 less than Campaign B
(a) How much did Campaign B raise? [1 mark]
(b) How much did Campaign C raise? [1 mark]
(c) What is the total amount raised by all three campaigns? [1 mark]
END OF QUIZ
Check your answers before handing in your paper.
Answers
Primary 4 Mathematics Quiz - Whole Numbers (Answer Key)
Total Marks: 40 marks
Section A: Multiple Choice (Questions 1-5)
1 mark each
1. Answer: D) 7,000
Explanation: In the number 47,293, the digit 7 is in the thousands place. The thousands place is the fourth digit from the right. To find what the digit stands for, multiply the digit by its place value: 7 × 1,000 = 7,000.
Common mistake: Choosing C) 700 means confusing thousands with hundreds place.
2. Answer: A) 72,008
Explanation: "Seventy-two thousand" gives us 72,000. "And eight" means we add 8 to the ones place. We need to put 0 in the hundreds and tens places as placeholders: 72,008.
Teaching note: The word "and" separates the thousands from the ones. Zero placeholders are needed for empty places.
3. Answer: C) 87,000
Explanation: To round 86,514 to the nearest thousand, look at the hundreds digit (5). Since 5 is equal to or greater than 5, we round up: 86,514 → 87,000.
Rounding rule: Look at the digit to the right of the place you're rounding to. If it's 5 or more, round up. If it's 4 or less, round down.
4. Answer: B) 59,048
Explanation: Compare digit by digit from left (ten thousands place):
- All have 5 in ten thousands place
- Compare thousands: 58,xxx vs 59,xxx → 59,xxx is larger (B and D)
- Compare hundreds: 59,048 vs 59,004 → 0 = 0, continue
- Compare tens: 4 vs 0 → 4 > 0, so 59,048 is greatest
5. Answer: B) 37,750
Explanation: Find the pattern by subtracting consecutive terms: 37,500 − 37,250 = 250. The rule is "add 250 each time." So: 37,250, 37,500, 37,750, 38,000, 38,250. Check: 37,750 + 250 = 38,000 ✓
Section B: Short Answer (Questions 6-14)
6. Answer: Sixty-three thousand and forty-nine Marks: 2 marks
Explanation: Break down the number:
- 63,000 = sixty-three thousand
- 049 = forty-nine (note: we say "and" before the tens/ones part when there's no hundreds)
Common mistake: Writing "sixty-three thousand, forty-nine" without "and", or saying "sixty-three thousand, four hundred and nine" by misreading 049.
7. Answer: The digit 8 is in the ten thousands place. It stands for 80,000 (eighty thousand). Marks: 2 marks (1 mark for identifying digit; 1 mark for value)
Explanation: In 84,726, reading from left to right:
- 8 is in the first position → ten thousands place
- 8 × 10,000 = 80,000
8. Answer: 45,238, 45,283, 45,382, 45,832 Marks: 2 marks
Explanation: All numbers have 45 in thousands place. Compare the hundreds digit:
- 45,238: 2
- 45,283: 2
- 45,382: 3
- 45,832: 8
Then compare tens for 45,238 and 45,283: 3 < 8, so 45,238 < 45,283.
Method: Compare digits from left to right, stopping when you find a difference.
9. Answers:
- (a) 49,610 [1 mark]
- (b) 49,600 [1 mark]
- (c) 50,000 [1 mark]
Total: 3 marks
Explanation:
- (a) Nearest ten: Look at ones digit (7). 7 ≥ 5, so round up: 49,607 → 49,610
- (b) Nearest hundred: Look at tens digit (0). 0 < 5, so round down: 49,607 → 49,600
- (c) Nearest thousand: Look at hundreds digit (6). 6 ≥ 5, so round up: 49,607 → 50,000
10. Answer: 14,450; 16,450. The rule is "add 1,000 each time." Marks: 2 marks (1 mark for numbers; 1 mark for rule)
Explanation: 13,450 − 12,450 = 1,000. Check: 14,450 + 1,000 = 15,450 ✓, and 15,450 + 1,000 = 16,450 ✓
11. Answer: 43,315 Marks: 2 marks
Working:
24,368
+ 18,947
--------
43,315
Step-by-step:
- Ones: 8 + 7 = 15, write 5, carry 1
- Tens: 6 + 4 + 1 = 11, write 1, carry 1
- Hundreds: 3 + 9 + 1 = 13, write 3, carry 1
- Thousands: 4 + 8 + 1 = 13, write 3, carry 1
- Ten thousands: 2 + 1 + 1 = 4
12. Answer: 30,144 Marks: 2 marks
Working:
50,000
- 19,856
--------
30,144
Step-by-step (using regrouping/borrowing):
- Ones: 0 − 6, need to borrow. 10 − 6 = 4
- Tens: 9 − 5 = 4 (after borrowing)
- Hundreds: 9 − 8 = 1 (after borrowing)
- Thousands: 9 − 9 = 0 (after borrowing)
- Ten thousands: 4 − 1 = 3
13. Answer: 7,625 books were donated. Marks: 2 marks
Working:
41,875 (new total)
- 34,250 (original)
--------
7,625
Explanation: The difference between the new and original number of books gives the donation amount.
14. Answer: 42,250 packets Marks: 2 marks
Working: 8,450 × 5 = ?
Method: 8,000 × 5 = 40,000; 450 × 5 = 2,250; Total = 42,250
Or:
8,450
× 5
-------
42,250
Section C: Problem Solving (Questions 15-20)
3 marks each
15. Answers:
- (a) 56,000 [1 mark]
- (b) 12,242 [1 mark]
- (c) Disagree. 68,725 ≈ 69,000 (nearest thousand) or 68,725 ≈ 70,000 (nearest ten thousand). Using nearest thousand, the statement is not accurate.
Working and explanation:
(a) 56,483: hundreds digit is 4, so round down → 56,000
(b) 68,725 − 56,483 = 12,242
68,725
- 56,483
--------
12,242
(c) Using nearest thousand: 68,725 ≈ 69,000, not 70,000. However, to nearest ten thousand: 68,725 ≈ 70,000. The newspaper is approximately correct if rounding to ten thousands, but should specify. Accept reasoned answers with ≈ used correctly.
Marking note: Award 1 mark for correct use of ≈ symbol with any valid rounding explanation.
16. Answers based on expected table:
- (a) Science Centre Singapore [1 mark]
- (b) 51,600 [1 mark]
- (c) 77,980 [1 mark]
Working: (a) Compare: 51,638 > 42,856 > 35,124 > 28,947
(b) 51,638: hundreds digit is 6 ≥ 5, round up → 51,600... wait: 51,638 → look at tens digit (3) for nearest hundred. 3 < 5, so 51,600.
Correction: For nearest hundred, look at tens digit: 3 < 5, so 51,638 → 51,600.
(c) 42,856 + 35,124 = 77,980
42,856
+ 35,124
--------
77,980
Expected visual: Table must show four museums with specified numbers for answer to be valid.
17. Answers based on expected number line:
- (a) 67,500 [1 mark]
- (b) 1,000 [1 mark]
- (c) 68,750 [1 mark]
Working: (a) Point B is marked at 67,500 (halfway between 67,000 and 68,000, or 7.5 units from 60,000 where each unit = 1,000)
(b) Point A = 63,000; Point D = 62,000; Difference = 63,000 − 62,000 = 1,000
(c) Halfway between 67,500 and 70,000: (67,500 + 70,000) ÷ 2 = 137,500 ÷ 2 = 68,750
Or: Difference is 2,500; half is 1,250; 67,500 + 1,250 = 68,750
Expected visual: Number line must show positions at 62,000 (D), 63,000 (A), 65,000 (C), 67,500 (B) between 60,000 and 70,000.
18. Answers:
- (a) 24,754 [1 mark]
- (b) 24,849 [1 mark] (Correction: 24,750 + 99 = 24,849 for 100th receipt, or 24,750 + 100 − 1 = 24,849)
- (c) 24,800 [1 mark]
Working: (a) 5th receipt: 24,750 + 4 = 24,754 (since first is 24,750, second is 24,751, etc.)
Alternative interpretation: If "first receipt numbered 24,750" means that's the starting number, then 5th receipt = 24,750 + 4 = 24,754.
(b) 100 receipts: 24,750 + 99 = 24,849 (or 24,750 + 100 − 1 = 24,849)
(c) 24,754 rounded to nearest hundred: tens digit is 5, so round up → 24,800
19. Answers:
- (a) 86,524 [1 mark]
- (b) 26,504 [1 mark]
- (c) 27,000 [1 mark]
Working from expected visual: Place value chart shows: _ 6 _ _ 4 with digits 2, 5, 8 to fill three empty places.
(a) Largest number: Put largest remaining digit in highest empty place (ten thousands):
- Ten thousands: 8
- Hundreds: 5
- Tens: 2
- Result: 86,524
(b) Smallest number: Put smallest remaining digit in highest empty place, but ten thousands cannot be 0. Digits available: 2, 5, 8. Smallest for ten thousands is 2:
- Ten thousands: 2
- Hundreds: 0? No, we must use 5 and 8. Hundreds: 5, Tens: 8, or vice versa.
- For smallest: 26,584 or 26,854? Compare: 26,504 would require 0, but we must use 2, 5, 8.
Wait — re-reading: The empty boxes are Ten Thousands, Hundreds, Tens. We place 2, 5, 8 in these three places.
(b) Smallest: 2 in Ten Thousands, then 0 not available... Actually we need minimum: 2, then 5, then 8 in remaining: 26,584? Or 26,854?
26,504 is wrong (no 0). With digits 2,5,8: options are 26,584, 26,854, 28,654, etc.
Smallest: 26,854? No wait — put smallest digit in highest value place: 2 (ten thousands), then 5 (hundreds), then 8 (tens): 26,584
Or 2 (ten thousands), 5 (tens), 8 (hundreds): 25,684? No, hundreds is higher place than tens.
Places: Ten Thousands, Thousands, Hundreds, Tens, Ones Filled: [blank], 6, [blank], [blank], 4
To fill: Ten Thousands, Hundreds, Tens with 2, 5, 8.
For smallest: 2 (ten thousands), then 5 (hundreds), then 8 (tens): 26,584
Wait — 5 hundreds vs 8 hundreds: Actually we want smallest overall number, so after fixing ten thousands as 2, we arrange 5 and 8 in remaining places to minimize: 5 in hundreds, 8 in tens gives 26,584. If we swap: 28,564... no that's larger.
Actually comparing 26,584 vs 26,854: 26,584 < 26,854. So smallest is 26,584.
(c) 26,584 rounded to nearest thousand: hundreds digit is 5 ≥ 5, round up → 27,000
Marking correction for (b): Accept 26,584 as correct answer.
20. Answers:
- (a) $43,330 [1 mark]
- (b) $30,685 [1 mark]
- (c) $108,595 [1 mark]
Working: (a) Campaign B = 34,580 + 8,750 = 43,330
34,580
+ 8,750
--------
43,330
(b) Campaign C = 43,330 − 12,645 = 30,685
43,330
- 12,645
--------
30,685
(c) Total = 34,580 + 43,330 + 30,685 = 108,595
34,580
43,330
+ 30,685
---------
108,595
END OF ANSWER KEY