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Primary 5 Mathematics Whole Numbers Quiz

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Questions

Primary 5 Mathematics Quiz - Whole Numbers

Name: ___________________________
Class: Primary 5 _____
Date: _______________
Score: _____ / 50

Duration: 45 minutes
Total Marks: 50

Instructions:

Answer all questions.
Show your working clearly in the space provided.
Write your answers in the blanks or boxes provided.
For multiple-choice questions, shade the correct oval (1, 2, 3, or 4).

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

Choose the correct answer and write its number (1, 2, 3, or 4) in the brackets provided.

1. In the number 7,382,594, what is the value of the digit 8?
(1) 800
(2) 8,000
(3) 80,000
(4) 800,000
Answer: (____)

2. Which of the following numbers is closest to 4,567,890 when rounded to the nearest ten thousand?
(1) 4,560,000
(2) 4,570,000
(3) 4,500,000
(4) 4,600,000
Answer: (____)

3. 6,000,000 + 400,000 + 30,000 + 2,000 + 500 + 40 + 8 = __________
(1) 6,432,548
(2) 6,432,584
(3) 6,423,548
(4) 6,342,548
Answer: (____)

4. Find the product of 4,328 and 50.
(1) 21,640
(2) 216,400
(3) 2,164,000
(4) 21,640,000
Answer: (____)

5. What is the quotient when 8,736 is divided by 12?
(1) 728
(2) 738
(3) 782
(4) 828
Answer: (____)

6. Evaluate: 48 + 12 × 4 − 20 ÷ 5
(1) 80
(2) 88
(3) 92
(4) 100
Answer: (____)

7. Which of the following has the same value as 3,050 × 60?
(1) 3,050 × 6 × 10
(2) 3,050 × 600
(3) 305 × 600
(4) 30,500 × 6
Answer: (____)

8. A factory produced 2,450 toys each day for 25 days. How many toys were produced in total?
(1) 61,250
(2) 61,520
(3) 62,150
(4) 62,510
Answer: (____)

9. What is the remainder when 9,876 is divided by 8?
(1) 2
(2) 3
(3) 4
(4) 5
Answer: (____)

10. Round 5,999,999 to the nearest million.
(1) 5,000,000
(2) 5,900,000
(3) 6,000,000
(4) 6,900,000
Answer: (____)

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

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

11. Write 8,040,306 in words.

12. Find the value of 7,200 × 400.

13. Divide 6,543 by 9. What is the quotient and remainder?
Quotient: __________
Remainder: __________

14. Evaluate: (3,600 + 2,400) ÷ 12 × 5

15. A number when rounded to the nearest thousand is 45,000. What is the greatest possible value of this number?

16. Find the missing number: 4,800,000 = 4,000,000 + __________ + 800,000

17. Mr Tan had $12,500. He spent$ 3,850 on a television and $1,275 on a refrigerator. How much money had he left?

18. There are 2,345 books on a shelf. If 1,876 books are fiction, how many are non-fiction?

19. A box contains 48 packets of biscuits. Each packet has 12 biscuits. How many biscuits are there in 15 such boxes?

20. Complete the number pattern:
12,500, 13,000, 13,500, __________, 14,500, 15,000

--- END OF QUIZ ---

Answers

Primary 5 Mathematics Quiz - Whole Numbers (Answer Key)

Total Marks: 50

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

1. Answer: (3) 80,000
Explanation: The digit 8 is in the ten thousands place. Its value is 8 × 10,000 = 80,000.
Key concept: Place value up to 10 million.

2. Answer: (2) 4,570,000
Explanation: To round to the nearest ten thousand, look at the thousands digit (7). Since 7 ≥ 5, round up. 4,567,890 → 4,570,000.
Key concept: Rounding to the nearest ten thousand.

3. Answer: (1) 6,432,548
Explanation: Add by place value: 6,000,000 + 400,000 = 6,400,000; + 30,000 = 6,430,000; + 2,000 = 6,432,000; + 500 = 6,432,500; + 40 = 6,432,540; + 8 = 6,432,548.
Key concept: Place value addition.

4. Answer: (2) 216,400
Explanation: 4,328 × 50 = 4,328 × 5 × 10 = 21,640 × 10 = 216,400.
Key concept: Multiplication by multiples of 10.

5. Answer: (1) 728
Explanation: 8,736 ÷ 12 = 728. Check: 728 × 12 = 7,280 + 1,456 = 8,736.
Key concept: Division of up to 4-digit by 2-digit numbers.

6. Answer: (3) 92
Explanation: Order of operations (BODMAS):
12 × 4 = 48
20 ÷ 5 = 4
48 + 48 − 4 = 96 − 4 = 92.
Common mistake: Doing addition before multiplication/division.

7. Answer: (1) 3,050 × 6 × 10
Explanation: 3,050 × 60 = 3,050 × (6 × 10) = 3,050 × 6 × 10. This uses the associative property of multiplication.
Key concept: Multiplication by multiples of 10.

8. Answer: (1) 61,250
Explanation: 2,450 × 25 = 2,450 × 100 ÷ 4 = 245,000 ÷ 4 = 61,250.
Key concept: Multiplication word problem.

9. Answer: (3) 4
Explanation: 9,876 ÷ 8 = 1,234 remainder 4. Check: 1,234 × 8 = 9,872; 9,876 − 9,872 = 4.
Key concept: Division with remainder.

10. Answer: (3) 6,000,000
Explanation: The hundred thousands digit is 9 (≥ 5), so round up the millions digit from 5 to 6. 5,999,999 → 6,000,000.
Key concept: Rounding to the nearest million.

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

11. Eight million, forty thousand, three hundred and six
Marking: 1 mark for "eight million", 1 mark for "forty thousand, three hundred and six" (or equivalent correct wording).
Key concept: Reading and writing numbers up to 10 million in words.

12. 2,880,000
Working: 7,200 × 400 = 7,200 × 4 × 100 = 28,800 × 100 = 2,880,000.
Marking: 1 mark for correct method (×4 then ×100 or ×400 directly), 1 mark for correct answer.
Key concept: Multiplication by multiples of 100.

13. Quotient: 727, Remainder: 0
Working: 6,543 ÷ 9 = 727. Check: 727 × 9 = 6,543.
Marking: 1 mark for quotient, 1 mark for remainder.
Key concept: Division of 4-digit by 1-digit.

14. 2,500
Working: (3,600 + 2,400) ÷ 12 × 5 = 6,000 ÷ 12 × 5 = 500 × 5 = 2,500.
Marking: 1 mark for correct order of operations (brackets first, then division, then multiplication), 1 mark for correct answer.
Key concept: Order of operations with brackets.

15. 45,499
Explanation: When rounding to the nearest thousand, numbers from 44,500 to 45,499 round to 45,000. The greatest is 45,499.
Marking: 2 marks for correct answer; 1 mark if student writes 45,500 (common error — this rounds to 46,000).
Key concept: Rounding — finding greatest/least possible value.

16. 0
Working: 4,800,000 = 4,000,000 + 0 + 800,000. The missing place value is hundred thousands, which is 0.
Marking: 2 marks for correct answer.
Key concept: Place value with zero placeholders.

17. $7,375 **Working:** Total spent =$ 3,850 + $1,275 =$ 5,125. Money left = $12,500 −$ 5,125 = $7,375.
Marking: 1 mark for finding total spent, 1 mark for correct subtraction and answer.
Key concept: Multi-step addition and subtraction word problem.

18. 469
Working: 2,345 − 1,876 = 469.
Marking: 2 marks for correct answer; 1 mark for correct method with calculation error.
Key concept: Subtraction word problem.

19. 8,640
Working: Biscuits per box = 48 × 12 = 576. Total in 15 boxes = 576 × 15 = 8,640.
Alternative: 48 × 12 × 15 = 48 × 180 = 8,640.
Marking: 1 mark for finding biscuits per box, 1 mark for correct total.
Key concept: Multi-step multiplication word problem.

20. 14,000
Explanation: The pattern increases by 500 each time: 12,500 → 13,000 → 13,500 → 14,000 → 14,500 → 15,000.
Marking: 2 marks for correct answer.
Key concept: Number patterns with constant difference.

--- END OF ANSWER KEY ---