From Real Exams Exam Paper

Primary 4 Mathematics Semestral Assessment 1 (Mid-Year) Paper 3

Free P4 Maths SA1 Paper 3, Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.

Primary 4 Mathematics From Real Exams Generated by Claude Sonnet 4 Updated 2026-08-17

Questions

Free quiz and exam paper access

Enter your details to view this paper

Your access is remembered on this device.

Answers

TUITIONGOWHERE PRIMARY SCHOOL (AI)

SA1 EXAMINATION 2026 (VERSION 3) - ANSWER KEY

PRIMARY 4 MATHEMATICS


Section A: Multiple Choice (20 marks)

1. Answer: (D) 5,000 The digit 5 is in the thousands place, so its value is 5 × 1,000 = 5,000.

2. Answer: (C) 24 Multiples of 4: 4, 8, 12, 16, 20, 24... Multiples of 6: 6, 12, 18, 24... 24 is a common multiple of both.

3. Answer: (C) 3 2/5 17/5 = 17 ÷ 5 = 3 remainder 2 = 3 2/5

4. Answer: (B) 0.45 45/100 = 0.45

5. Answer: (C) 52 cm Perimeter of square = 4 × side = 4 × 13 = 52 cm

6. Answer: (C) 68,000 67,549 rounded to nearest thousand: Look at hundreds digit (5), round up to 68,000.

7. Answer: (A) 1,541 9,246 ÷ 6 = 1,541

8. Answer: (D) 9/12 9/12 = 3/4, not 2/3. All others equal 2/3.

9. Answer: (A) 2.005, 2.05, 2.5 2.005 < 2.05 < 2.5

10. Answer: (B) 126 cm² Area = length × width = 14 × 9 = 126 cm²

11. Answer: (B) 15, 30, 45 LCM of 5 and 3 is 15. Common multiples: 15, 30, 45...

12. Answer: (B) 12 4 = 4 × 3/3 = 12/3, so there are 12 thirds.

13. Answer: (B) 39,746 5,678 × 7 = 39,746

14. Answer: (B) 38/9 4 2/9 = (4 × 9 + 2)/9 = (36 + 2)/9 = 38/9

15. Answer: (A) 1, 2, 3, 4, 6, 9, 12, 18, 36 All factors of 36.

16. Answer: (B) 3.8 3.78 rounded to nearest tenth: Look at hundredths (8), round up to 3.8.

17. Answer: (B) 1,200 8,400 ÷ 7 = 1,200

18. Answer: (A) 5/8 5/8 = 15/24, 7/12 = 14/24. Since 15/24 > 14/24, 5/8 is greater.

19. Answer: (B) 59,467 58,467 + 1,000 = 59,467

20. Answer: (C) 32 cm Area = 64 cm², so side = 8 cm. Perimeter = 4 × 8 = 32 cm.


Section B: Short Answer (40 marks)

21. Answer: 73,573

  45,678
+ 27,895
--------
  73,573

22. Answer: 12/12 = 1 5/12 + 7/12 = 12/12 = 1

23. Answer: 4.78

  8.45
- 3.67
------
  4.78

24. Answer: 58 cm Perimeter = 2 × (length + width) = 2 × (18 + 11) = 2 × 29 = 58 cm

25. Answer: 3 5/6 23/6 = 23 ÷ 6 = 3 remainder 5 = 3 5/6

26. Answer: 54,312

  6,789
×     8
-------
 54,312

27. Answer: 1,254 7,524 ÷ 6 = 1,254

28. Answer: 7/10 2/5 = 4/10 4/10 + 3/10 = 7/10

29. Answer: 6.85

 12.80
-  5.95
-------
  6.85

30. Answer: 192 cm² Area = length × width = 16 × 12 = 192 cm²

31. Answer: 9, 18, 27, 36, 45

32. Answer: 39/7 5 4/7 = (5 × 7 + 4)/7 = (35 + 4)/7 = 39/7


Section C: Word Problems (40 marks)

33. Answer: 12,395 beads

Working:

  • Started with: 15,890 beads
  • Used: -6,745 beads
  • Bought: +3,250 beads
  • Beads now = 15,890 - 6,745 + 3,250 = 12,395 beads

34. Answer: 25,704 bottles

Working: Bottles in 9 hours = 2,856 × 9 = 25,704 bottles

35. Answer: 1,071 eggs

Working: Eggs per carton = 8,568 ÷ 8 = 1,071 eggs

36. Answer: 5/8

Working: Fraction read = 3/8 + 2/8 = 5/8

37. Answer: 7.21 kg

Working: Total mass = 4.85 + 2.36 = 7.21 kg

38. Answer: 335 m²

Working:

  • Area of pool = 25 × 15 = 375 m²
  • Area of island = 8 × 5 = 40 m²
  • Area of water = 375 - 40 = 335 m²

39. Answer: $1,496

Working:

  • Savings per week = 1,2501,250 - 876 = $374
  • Savings in 4 weeks = 374×4=374 × 4 = 1,496

40. Answer: 5,022 mangoes

Working:

  • Friday: 4,567 mangoes
  • Saturday: 4,567 + 2,345 = 6,912 mangoes
  • Sunday: 6,912 - 1,890 = 5,022 mangoes

~ End of Answer Key ~