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Primary 4 Mathematics Semestral Assessment 2 (End of Year) Paper 1

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Questions

TuitionGoWhere Exam Practice (AI) - Mathematics Primary 4

SA2 Practice Paper — Whole Numbers (Version 1 of 5)

School: TuitionGoWhere Exam Practice (AI)
Subject: Mathematics
Level: Primary 4
Paper: SA2 Practice (Whole Numbers)
Version: 1 of 5
Duration: 60 minutes
Total Marks: 40
Name: ______________________
Class: _________
Date: ___________

Instructions:

This paper contains 20 questions on Whole Numbers.
Write your answers in the spaces provided.
Show your working clearly where required.
Use the approximation symbol (≈) only when rounding.

Section A: Place Value and Rounding (Questions 1–8) [16 marks]

1. In the number 47,382, which digit is in the thousands place? [1]

2. What does the digit 6 stand for in 61,204? [1]

3. Write "fifty-eight thousand and nine" in numerals. [1]

4. Round 29,056 to the nearest hundred. [1]

5. Round 73,450 to the nearest thousand. [1]

6. 82,400 rounded to the nearest thousand is 82,000. Which of the following could be the original number? [1]
A) 82,501 B) 82,349 C) 82,601 D) 83,000

7. What is the value of the digit 5 in 95,137? [1]

8. Round 16,985 to the nearest ten. [1]

Section B: Operations with Whole Numbers (Questions 9–14) [12 marks]

9. Calculate 3,472 + 5,618. [1]

10. Calculate 8,204 − 3,957. [1]

11. Multiply 4,236 by 3. [2]

12. Divide 7,824 by 4. [2]

13. A shop sold 1,250 packets of biscuits each day for 6 days. How many packets were sold altogether? [2]

14. Mr Tan had 9,600 stickers. He gave them equally to 8 classes. How many stickers did each class receive? [2]

Section C: Factors, Multiples and Problem Solving (Questions 15–20) [12 marks]

15. List all the factors of 18. [2]

16. Which of the following is a multiple of 7? [1]
A) 45 B) 56 C) 50 D) 61

17. Find the common factors of 12 and 20. [2]

18. Give the first three common multiples of 3 and 5. [2]

19. Siti has some marbles. She can pack them equally into groups of 4, 6, or 8 with none left over. What is the least number of marbles she could have? [2]

20. Buses A and B arrive at a stop every 12 minutes and 15 minutes respectively. If they both arrive at 8:00 a.m., at what time will they next arrive together? [3]

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Answers

TuitionGoWhere Exam Practice (AI) — Mathematics Primary 4

SA2 Practice Paper (Whole Numbers) Version 1 — Answer Key

Total Marks: 40

Section A: Place Value and Rounding

1. [1 mark]
Answer: 7
Teaching note: Place values from right: ones (2), tens (8), hundreds (3), thousands (7), ten thousands (4). The thousands digit is 7.

2. [1 mark]
Answer: 60,000
Teaching note: 6 is in the ten thousands place, so it stands for 6 × 10,000 = 60,000. Common mistake: writing 6 or 600.

3. [1 mark]
Answer: 58,009
Teaching note: "fifty-eight thousand" = 58,000; "and nine" = 09. So 58,009.

4. [1 mark]
Answer: 29,100
Working: 29,056 → hundreds digit is 0, tens digit is 5 (≥5) → round up hundreds to 1, so 29,100.

5. [1 mark]
Answer: 73,000
Working: 73,450 → thousands digit is 3, hundreds digit is 4 (<5) → keep thousands, so 73,000.

6. [1 mark]
Answer: B (82,349)
Working: To round to 82,000 (nearest thousand), number must be ≥81,500 and ≤82,499. Only 82,349 fits.

7. [1 mark]
Answer: 5,000
Teaching note: 5 is in thousands place → 5 × 1,000 = 5,000.

8. [1 mark]
Answer: 16,990
Working: 16,985 → tens digit is 8, ones digit is 5 → round up to 16,990.

Section B: Operations

9. [1 mark]
Answer: 9,090
Working: 3,472 + 5,618 = 9,090.

10. [1 mark]
Answer: 4,247
Working: 8,204 − 3,957 = 4,247.

11. [2 marks]
Answer: 12,708
Working:
4,236 × 3
= (4,000 × 3) + (200 × 3) + (30 × 3) + (6 × 3)
= 12,000 + 600 + 90 + 18 = 12,708
(Marks: 1 for method, 1 for correct answer)

12. [2 marks]
Answer: 1,956
Working:
7,824 ÷ 4
= 7,000÷4=1,750 rem 0; 824÷4=206 → 1,750+206=1,956
or long division: 4 | 7824 → 1956
(Marks: 1 method, 1 answer)

13. [2 marks]
Answer: 7,500 packets
Working: 1,250 × 6 = 7,500
(Marks: 1 for multiplication, 1 for answer with unit)

14. [2 marks]
Answer: 1,200 stickers
Working: 9,600 ÷ 8 = 1,200
(Marks: 1 method, 1 answer)

Section C: Factors, Multiples, Problem Solving

15. [2 marks]
Answer: 1, 2, 3, 6, 9, 18
Working: Pairs: 1×18, 2×9, 3×6.
(Marks: 1 for partial, 2 for complete list; common mistake: missing 1 or 18)

16. [1 mark]
Answer: B (56)
Working: 7×8=56, so 56 is a multiple of 7.

17. [2 marks]
Answer: 1, 2, 4
Working: Factors of 12: 1,2,3,4,6,12. Factors of 20: 1,2,4,5,10,20. Common: 1,2,4.

18. [2 marks]
Answer: 15, 30, 45
Working: Multiples of 3: 3,6,9,12,15…; of 5: 5,10,15…; common: 15,30,45.

19. [2 marks]
Answer: 24 marbles
Working: LCM of 4,6,8.
Multiples of 8: 8,16,24 → 24 divisible by 4 and 6. Least = 24.

20. [3 marks]
Answer: 9:00 a.m.
Working: LCM of 12 and 15.
12 = 2²×3, 15 = 3×5 → LCM = 2²×3×5 = 60 minutes.
8:00 a.m. + 60 min = 9:00 a.m.
(Marks: 1 for LCM, 1 for 60 min, 1 for correct time)