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Primary 4 Mathematics Whole Numbers Quiz

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Questions

Primary 4 Mathematics Quiz - Whole Numbers

Name: ________________________________________
Class: Primary 4 ________
Date: _______________
Score: ________ / 40

Duration: 45 minutes
Total Marks: 40

Instructions:

Answer all questions.
Show your working clearly in the space provided.
Write your answers in the spaces provided.
For multiple-choice questions, write the letter (A, B, C, or D) in the bracket 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 letter (A, B, C, or D) in the bracket provided.

1. In the number 68,429, which digit is in the thousands place?
A) 6
B) 8
C) 4
D) 2
[ ]

2. What does the digit 7 stand for in 57,381?
A) 7
B) 70
C) 700
D) 7,000
[ ]

3. Write 84,006 in words.
A) Eighty-four thousand and six
B) Eighty-four thousand and sixty
C) Eight thousand four hundred and six
D) Eight hundred four thousand and six
[ ]

4. Round 37,248 to the nearest hundred.
A) 37,200
B) 37,250
C) 37,300
D) 37,000
[ ]

5. A number rounded to the nearest thousand is 52,000. What is the greatest possible value of this number?
A) 51,499
B) 52,499
C) 52,500
D) 53,499
[ ]

6. Which of the following numbers is the smallest?
A) 40,506
B) 40,056
C) 45,006
D) 45,060
[ ]

7. Complete the number pattern:
12,500, 13,000, 13,500, ______, 14,500
A) 13,600
B) 13,800
C) 14,000
D) 14,200
[ ]

8. 60,000 + 4,000 + 300 + 20 + 5 = ______
A) 64,325
B) 64,523
C) 64,352
D) 64,235
[ ]

9. Find the difference between 85,000 and 29,476.
A) 55,524
B) 55,624
C) 56,524
D) 56,624
[ ]

10. A factory produced 28,450 toys in January. It produced 5,300 more toys in February than in January. How many toys did it produce in February?
A) 23,150
B) 33,150
C) 33,750
D) 33,850
[ ]

Section B: Short Answer Questions (10 × 2 marks = 20 marks)

Show your working clearly and write your answers in the spaces provided.

11. Write the following in numerals:
Ninety-two thousand, three hundred and seven
Answer: _______________________

12. In 46,815, what is the value of the digit 6?
Answer: _______________________

13. Round 64,589 to the nearest thousand.
Answer: _______________________

14. A number when rounded to the nearest ten is 18,760. What is the smallest possible value of this number?
Answer: _______________________

15. Arrange the following numbers in order, starting from the greatest:
30,405, 30,054, 34,005, 34,050
Answer: _______________________

16. Complete the number pattern:
48,000, 46,500, 45,000, ______, 42,000
Answer: _______________________

17. Find the sum of 27,384 and 45,619.
Answer: _______________________

18. Subtract 18,927 from 50,000.
Answer: _______________________

19. A library has 34,560 English books. It has 12,785 fewer Chinese books than English books. How many Chinese books are there?
Answer: _______________________

20. Mr Tan had $45,000. He bought a car for$ 28,750 and a motorcycle for $9,800. How much money had he left?
Answer: _______________________

Answers

Primary 4 Mathematics Quiz - Whole Numbers (Answer Key)

Total Marks: 40

Section A: Multiple Choice Questions (10 × 1 mark = 10 marks)

1. B
Explanation: In 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.

2. D
Explanation: In 57,381, the digit 7 is in the thousands place. Its value is 7 × 1,000 = 7,000.

3. A
Explanation: 84,006 = 84 thousands and 6 ones. In words: "Eighty-four thousand and six". Note: "and" is used before the last part when there are no hundreds or tens.

4. A
Explanation: To round 37,248 to the nearest hundred, look at the tens digit (4). Since 4 < 5, round down. The hundreds digit (2) stays the same, and tens/ones become 0. Answer: 37,200.

5. B
Explanation: When rounding to the nearest thousand, numbers from 51,500 to 52,499 round to 52,000. The greatest possible value is 52,499. (52,500 would round up to 53,000.)

6. B
Explanation: Compare ten thousands (all 4), then thousands (all 0), then hundreds: 40,506 has 5 hundreds; 40,056 has 0 hundreds; 45,006 has 5 hundreds; 45,060 has 5 hundreds. The smallest is 40,056.

7. C
Explanation: The pattern increases by 500 each time: 12,500 → 13,000 → 13,500 → 14,000 → 14,500.

8. A
Explanation: 60,000 + 4,000 = 64,000; 64,000 + 300 = 64,300; 64,300 + 20 = 64,320; 64,320 + 5 = 64,325.

9. A
Explanation: 85,000 − 29,476 = 55,524.
Working:

  85,000
- 29,476
--------
  55,524

10. C
Explanation: February production = January + 5,300 = 28,450 + 5,300 = 33,750.

Section B: Short Answer Questions (10 × 2 marks = 20 marks)

11. 92,307 (2 marks)
Working: Ninety-two thousand = 92,000; three hundred = 300; seven = 7. Total = 92,000 + 300 + 7 = 92,307.
Common mistake: Writing 92,370 (confusing "three hundred and seven" with "three hundred seventy").

12. 6,000 (2 marks)
Explanation: In 46,815, the digit 6 is in the thousands place. Value = 6 × 1,000 = 6,000.

13. 65,000 (2 marks)
Working: To round 64,589 to the nearest thousand, look at the hundreds digit (5). Since 5 ≥ 5, round up. The thousands digit (4) becomes 5, and all digits to the right become 0. Answer: 65,000.

14. 18,755 (2 marks)
Explanation: When rounding to the nearest ten, numbers from 18,755 to 18,764 round to 18,760. The smallest is 18,755. (18,754 would round down to 18,750.)

15. 34,050, 34,005, 30,405, 30,054 (2 marks)
Working: Compare ten thousands (all 3), then thousands: 34,xxx > 30,xxx. Among 34,050 and 34,005: compare hundreds (both 0), tens (5 > 0), so 34,050 > 34,005. Among 30,405 and 30,054: compare hundreds (4 > 0), so 30,405 > 30,054.

16. 43,500 (2 marks)
Working: Pattern decreases by 1,500 each step: 48,000 − 1,500 = 46,500; 46,500 − 1,500 = 45,000; 45,000 − 1,500 = 43,500; 43,500 − 1,500 = 42,000.

17. 73,003 (2 marks)
Working:

  27,384
+ 45,619
--------
  73,003

Check: 27,000 + 45,000 = 72,000; 384 + 619 = 1,003; Total = 73,003.

18. 31,073 (2 marks)
Working:

  50,000
- 18,927
--------
  31,073

Check: 31,073 + 18,927 = 50,000 ✓

19. 21,775 (2 marks)
Working: Chinese books = English books − 12,785 = 34,560 − 12,785 = 21,775.

  34,560
- 12,785
--------
  21,775

20. 6,450 (2 marks)
Working: Total spent = $28,750 +$ 9,800 = $38,550. Money left =$ 45,000 − $38,550 =$ 6,450.
Alternative: $45,000 −$ 28,750 = $16,250;$ 16,250 − $9,800 =$ 6,450.