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

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Questions

TuitionGoWhere Exam Practice (AI) — SA2 Mathematics Primary 4 (Version 2)

School: TuitionGoWhere Exam Practice (AI)
Subject: Mathematics
Level: Primary 4
Paper: SA2 Practice Paper (Version 2 of 5)
Duration: 50 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 84,217, which digit is in the thousands place? [1]

2. What does the digit 6 stand for in 56,309? [1]

3. Write "sixty-two thousand and forty-eight" in numerals. [1]

4. Round 37,842 to the nearest hundred. [1]

5. Round 91,275 to the nearest thousand. [1]

6. 45,600 is rounded to the nearest hundred. Which of these could be the original number?
A) 45,549 B) 45,651 C) 45,582 D) 45,500 [1]

7. A number rounded to the nearest ten is 73,460. What is the greatest possible original number? [2]

8. Round 29,955 to the nearest thousand. Show your working. [2]

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

9. Calculate 3,482 + 5,917. [1]

10. Calculate 82,400 − 37,685. [2]

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

12. Divide 8,472 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?
A) 45 B) 56 C) 61 D) 70 [1]

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

18. Find the least common multiple of 4 and 6. [2]

19. Mrs Lim wants to pack marbles into bags of 3, 4, or 6 with none left over. What is the least number of marbles she can have? [2]

20. A bus leaves the terminal every 15 minutes and a train every 20 minutes. Both leave at 8:00 a.m. At what time will they next leave together? [3]

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Answers

TuitionGoWhere Exam Practice (AI) — SA2 Mathematics Primary 4 (Version 2) Answer Key

Total Marks: 40
Topic: Whole Numbers

Q1. [1 mark]
Answer: 4
Teaching note: Place values from right: ones (7), tens (1), hundreds (2), thousands (4), ten thousands (8). The thousands digit is 4.

Q2. [1 mark]
Answer: 6,000 (six thousand)
Teaching note: Digit 6 is in the thousands place (56,309 → 6 thousands = 6,000).

Q3. [1 mark]
Answer: 62,048
Teaching note: "Sixty-two thousand" = 62,000; "and forty-eight" = 48 → 62,048.

Q4. [1 mark]
Answer: 37,800
Teaching note: Round to nearest hundred: look at tens digit (4). Since 4 < 5, keep hundreds digit, replace tens and ones with 0 → 37,800.

Q5. [1 mark]
Answer: 91,000
Teaching note: Round to nearest thousand: look at hundreds digit (2). Since 2 < 5, keep thousand digit, lower rest to 0 → 91,000.

Q6. [1 mark]
Answer: C (45,582)
Teaching note: Rounding to nearest hundred means original ∈ [45,550, 45,649]. Only 45,582 fits.
Common mistake: choosing 45,500 (rounds to 45,500) or 45,651 (rounds to 45,700).

Q7. [2 marks]
Answer: 73,464
Marking: 1 mark for method (range 73,455–73,464), 1 mark for greatest value.
Teaching note: Nearest ten = 73,460 → original from 73,455 to 73,464. Greatest = 73,464.

Q8. [2 marks]
Answer: 30,000
Working: 29,955 → hundreds digit is 9 (≥5) → round thousands up: 29,000 → 30,000.
Marking: 1 mark working, 1 mark answer.

Q9. [1 mark]
Answer: 9,399
Working: 3,482 + 5,917 = 9,399.

Q10. [2 marks]
Answer: 44,715
Working:
82,400 − 37,685
= 82,400 − 30,000 − 7,000 − 600 − 80 − 5
= 52,400 − 7,685 = 44,715
(Or vertical subtraction with borrowing.)

Q11. [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.

Q12. [2 marks]
Answer: 2,118
Working: 8,472 ÷ 4 = 2,118 (4×2,118=8,472).

Q13. [2 marks]
Answer: 7,500 packets
Working: 1,250 × 6 = 7,500.
Marking: 1 mark method, 1 mark answer with unit.

Q14. [2 marks]
Answer: 1,200 stickers
Working: 9,600 ÷ 8 = 1,200.

Q15. [2 marks]
Answer: 1, 2, 3, 6, 9, 18
Marking: 1 mark for pairs, 1 mark complete list.
Teaching note: Factors are numbers that divide 18 exactly: 1×18, 2×9, 3×6.

Q16. [1 mark]
Answer: B (56) and D (70) — if single choice expected, B is first correct; both are multiples. Per MCQ single-select, B.
Teaching note: 7×8=56, 7×10=70. If only one option allowed, B.

Q17. [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.

Q18. [2 marks]
Answer: 12
Working: Multiples of 4: 4,8,12,16…; of 6: 6,12,18… LCM = 12.

Q19. [2 marks]
Answer: 12 marbles
Working: LCM of 3,4,6 = 12. Least number with no remainder for all bag sizes is 12.

Q20. [3 marks]
Answer: 8:00 a.m. + 60 min = 9:00 a.m.
Working: LCM of 15 and 20 = 60 minutes. Both leave together every 60 min. Next after 8:00 a.m. is 9:00 a.m.
Marking: 1 mark LCM, 1 mark time addition, 1 mark final time.