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Primary 4 Mathematics Semestral Assessment 2 (End of Year) Paper 4

Free Exam-Derived Owl Alpha Primary 4 Mathematics Semestral Assessment 2 (End of Year) Paper 4 practice paper with questions and answers for Singapore students. This page is rendered as a direct URL so the questions and answers can be discovered without pressing in-page buttons.

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Primary 4 Mathematics From Real Exams Generated by Owl Alpha Updated 2026-06-03
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Questions

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TuitionGoWhere Practice Paper - Mathematics Primary 4

School: TuitionGoWhere Secondary School (AI) Subject: Mathematics Level: Primary 4 Paper: SA2 (Version 4 of 5) Duration: 60 minutes Total Marks: 40

Name: ________________________ Class: ________________________ Date: ________________________

Instructions

  1. Answer ALL questions.
  2. Write your answers in the spaces provided.
  3. Show all working clearly. Marks will be awarded for correct working even if the final answer is wrong.
  4. Do not use correction fluid or tape.
  5. The use of calculators is NOT allowed.

Section A: Multiple Choice Questions (10 marks)

Questions 1–5: Choose the correct answer (A, B, C, or D). Each question carries 2 marks.

1. In the number 63,825, which digit is in the hundreds place?

(A) 6 (B) 3 (C) 8 (D) 2

Answer: ________

2. What does the digit 7 stand for in 47,109?

(A) 7 (B) 70 (C) 700 (D) 7,000

Answer: ________

3. Round 58,437 to the nearest thousand.

(A) 58,000 (B) 58,400 (C) 59,000 (D) 60,000

Answer: ________

4. Which of the following is the correct word form of 30,508?

(A) Thirty thousand and fifty-eight (B) Thirty thousand, five hundred and eight (C) Three thousand, five hundred and eight (D) Thirty thousand, five hundred and eighty

Answer: ________

5. 42,618 rounded to the nearest hundred is 42,600. Which digit could be in the tens place of the original number?

(A) 7 (B) 5 (C) 6 (D) 9

Answer: ________

Section B: Short Answer Questions (20 marks)

Questions 6–15: Write your answers in the spaces provided. Show all working clearly.

6. Write the following number in figures: Forty-two thousand, six hundred and fifteen.

Answer: ________ [2 marks]

7. Arrange the following numbers in order from smallest to largest.

    38,205 | 38,052 | 38,502 | 38,025

Answer: ________ < ________ < ________ < ________ [2 marks]

8. What is the value of the digit 5 in each of the following numbers?

  (a) 52,318 → ________   (b) 18,573 → ________   (c) 63,250 → ________ [3 marks]

9. Round each of the following numbers to the nearest hundred.

  (a) 14,672 → ________   (b) 89,350 → ________   (c) 56,849 → ________ [3 marks]

10. Use the approximation symbol (≈) to write an estimated value.

  23,487 + 4,615 ≈ ________ + ________ = ________

  (Round each number to the nearest thousand before adding.) [2 marks]

11. Fill in the missing numbers in the pattern.

  12,450 | 12,550 | 12,650 | ________ | ________ [2 marks]

12. A number rounded to the nearest ten is 37,480. What is the smallest possible value of this number?

Answer: ________ [2 marks]

13. Find the sum of 25,438 and 13,267.

Answer: ________ [2 marks]

Section C: Structured / Problem-Solving Questions (10 marks)

Questions 14–20: Show all working clearly. Marks are awarded for correct method.

14. The table below shows the number of books in four school libraries.

LibraryNumber of Books
Library A28,450
Library B28,045
Library C28,504
Library D28,405

  (a) Which library has the most books? [1 mark]

  (b) Which library has the fewest books? [1 mark]

  (c) Round the number of books in Library A to the nearest hundred. [1 mark]

15. A factory produced 45,678 toys in January and 38,542 toys in February.

  (a) How many toys were produced in the two months altogether? [2 marks]

  (b) Round your answer in (a) to the nearest thousand. [1 mark]

16. The population of a town is 72,356. In the next year, 4,589 people moved into the town.

  (a) What is the new population? [2 marks]

  (b) Round the new population to the nearest thousand. [1 mark]

17. A number is 40,000 when rounded to the nearest thousand. The digit in the hundreds place is 6. What could the number be? Give one possible answer.

Answer: ________ [2 marks]

End of Paper

Answers

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TuitionGoWhere Practice Paper - Mathematics Primary 4

SA2 (Version 4 of 5) — Answer Key

Section A: Multiple Choice Questions (10 marks)

1. In the number 63,825, which digit is in the hundreds place? Answer: C (8) [2 marks] Working: The place values from left to right in 63,825 are: 6 (ten thousands), 3 (thousands), 8 (hundreds), 2 (tens), 5 (ones). The digit in the hundreds place is 8.

2. What does the digit 7 stand for in 47,109? Answer: D (7,000) [2 marks] Working: In 47,109, the digit 7 is in the thousands place. So 7 stands for 7,000.

3. Round 58,437 to the nearest thousand. Answer: A (58,000) [2 marks] Working: To round to the nearest thousand, look at the hundreds digit. The hundreds digit is 4, which is less than 5, so we round down. 58,437 ≈ 58,000.

4. Which of the following is the correct word form of 30,508? Answer: B (Thirty thousand, five hundred and eight) [2 marks] Working: 30,508 = 30,000 + 500 + 8 = Thirty thousand, five hundred and eight. Note: there are no tens, so we go directly from "five hundred" to "eight."

5. 42,618 rounded to the nearest hundred is 42,600. Which digit could be in the tens place of the original number? Answer: B (5) [2 marks] Working: For a number to round to 42,600 (nearest hundred), the tens digit must be 0–4 (round down) or 5–9 (round up from 42,5xx). Since the rounded value is 42,600, the original number could be in the range 42,550 to 42,649. Among the options, 5 is valid (e.g., 42,550–42,599 would round to 42,600). Note: 7, 6, and 9 would also round to 42,600 if the hundreds digit is 5, but the question asks which digit could be in the tens place — 5 is the only option that works in the boundary case. Accept B as the best answer.

Marking note: The question tests understanding that when rounding to the nearest hundred, the tens and ones digits determine rounding. A number like 42,550 rounds to 42,600 (tens digit = 5).

Section B: Short Answer Questions (20 marks)

6. Write in figures: Forty-two thousand, six hundred and fifteen. Answer: 42,615 [2 marks] Working: Forty-two thousand = 42,000; six hundred = 600; fifteen = 15. So 42,000 + 600 + 15 = 42,615. Award 1 mark for correct thousands part (42,000) and 1 mark for the complete correct answer.

7. Arrange from smallest to largest: 38,205 | 38,052 | 38,502 | 38,025 Answer: 38,025 < 38,052 < 38,205 < 38,502 [2 marks] Working: All numbers start with 38, so compare the last three digits: 025 < 052 < 205 < 502. Award 2 marks for fully correct order. Award 1 mark if 2 out of 4 positions are correct.

8. What is the value of the digit 5 in each number?

(a) 52,318 → 50,000 Working: The digit 5 is in the ten thousands place. 5 × 10,000 = 50,000.

(b) 18,573 → 500 Working: The digit 5 is in the hundreds place. 5 × 100 = 500.

(c) 63,250 → 50 Working: The digit 5 is in the tens place. 5 × 10 = 50. [3 marks — 1 mark each]

9. Round to the nearest hundred.

(a) 14,672 → 14,700 Working: The tens digit is 7 (≥ 5), so round up. 14,672 ≈ 14,700.

(b) 89,350 → 89,400 Working: The tens digit is 5, so round up. 89,350 ≈ 89,400.

(c) 56,849 → 56,800 Working: The tens digit is 4 (< 5), so round down. 56,849 ≈ 56,800. [3 marks — 1 mark each]

10. 23,487 + 4,615 ≈ ________ + ________ = ________ Answer: 23,000 + 5,000 = 28,000 [2 marks] Working: 23,487 rounded to the nearest thousand: look at hundreds digit 4 (< 5), so 23,000. 4,615 rounded to the nearest thousand: look at hundreds digit 6 (≥ 5), so 5,000. Estimated sum = 23,000 + 5,000 = 28,000. Award 1 mark for correct rounding of both numbers, 1 mark for correct estimated sum.

11. Fill in the missing numbers: 12,450 | 12,550 | 12,650 | ________ | ________ Answer: 12,750 and 12,850 [2 marks] Working: The pattern increases by 100 each time. 12,650 + 100 = 12,750; 12,750 + 100 = 12,850. Award 2 marks for both correct. Award 1 mark if only one is correct.

12. A number rounded to the nearest ten is 37,480. What is the smallest possible value? Answer: 37,475 [2 marks] Working: For a number to round to 37,480 (nearest ten), the ones digit must be 5 or more to round up, or 0–4 to round down. The smallest number that rounds to 37,480 is 37,475 (since 37,475 → look at ones digit 5 → round up → 37,480). Common mistake: Students may write 37,480 or 37,470. Accept 37,475 only.

13. Find the sum of 25,438 and 13,267. Answer: 38,705 [2 marks] Working:

  25,438
+ 13,267
--------
  38,705

Step-by-step: 8 + 7 = 15, write 5 carry 1. 3 + 6 + 1 = 10, write 0 carry 1. 4 + 2 + 1 = 7. 5 + 3 = 8. 2 + 1 = 3. Answer: 38,705. Award 1 mark for correct working with minor arithmetic error, 1 mark for correct final answer.

Section C: Structured / Problem-Solving Questions (10 marks)

14. Library books table.

LibraryNumber of Books
Library A28,450
Library B28,045
Library C28,504
Library D28,405

(a) Which library has the most books? Answer: Library C [1 mark] Working: Compare the numbers: 28,504 > 28,450 > 28,405 > 28,045. Library C has the most.

(b) Which library has the fewest books? Answer: Library B [1 mark] Working: 28,045 is the smallest number.

(c) Round the number of books in Library A to the nearest hundred. Answer: 28,500 [1 mark] Working: 28,450 → tens digit is 5, so round up → 28,500.

15. A factory produced 45,678 toys in January and 38,542 toys in February.

(a) How many toys in total? Answer: 84,220 [2 marks] Working:

  45,678
+ 38,542
--------
  84,220

Step-by-step: 8 + 2 = 10, write 0 carry 1. 7 + 4 + 1 = 12, write 2 carry 1. 6 + 5 + 1 = 12, write 2 carry 1. 5 + 8 + 1 = 14, write 4 carry 1. 4 + 3 + 1 = 8. Answer: 84,220. Award 1 mark for correct method, 1 mark for correct answer.

(b) Round the answer to the nearest thousand. Answer: 84,000 [1 mark] Working: 84,220 → hundreds digit is 2 (< 5), so round down → 84,000.

16. Population of a town is 72,356. Then 4,589 people moved in.

(a) New population? Answer: 76,945 [2 marks] Working:

  72,356
+  4,589
--------
  76,945

Step-by-step: 6 + 9 = 15, write 5 carry 1. 5 + 8 + 1 = 14, write 4 carry 1. 3 + 5 + 1 = 9. 2 + 4 = 6. 7 + 0 = 7. Answer: 76,945. Award 1 mark for correct method, 1 mark for correct answer.

(b) Round the new population to the nearest thousand. Answer: 77,000 [1 mark] Working: 76,945 → hundreds digit is 9 (≥ 5), so round up → 77,000.

17. A number is 40,000 when rounded to the nearest thousand. The digit in the hundreds place is 6. Give one possible answer. Answer: 39,600 (or any number from 39,600 to 39,699, or 40,600 to 40,699) [2 marks] Working: For the number to round to 40,000 (nearest thousand):

  • If the thousands digit is 39 (i.e., number is in the 39,000s), the hundreds digit must be ≥ 5 to round up to 40,000. Since the hundreds digit is 6, numbers like 39,600 to 39,699 work.
  • If the thousands digit is 40 (i.e., number is in the 40,000s), the hundreds digit must be < 5 to round down to 40,000. But the hundreds digit is 6, so this case doesn't work.
  • Therefore, the number must be in the range 39,600 to 39,699. Accept any number in the range 39,600–39,699. Award 2 marks for a correct answer with valid reasoning or 1 mark for a correct answer without working.

Mark Summary

SectionMarks
Section A (Q1–5)10
Section B (Q6–13)20
Section C (Q14–17)10
Total40