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

Free P4 Maths SA2 Paper 4, Ox Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 4 Mathematics From Real Exams Generated by Ox Alpha Updated 2026-08-27

Questions

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Answers

TuitionGoWhere Practice Paper - Mathematics Primary 4 (SA2)

Answer Key - Whole Numbers (Version 4 of 5)

Section A (1 mark each)

QAnswerExplanation
1(2) 4Thousands place is the 4th digit from the right.
2(4) 9,0009 is in the thousands place.
3(3) 68,005Sixty-eight thousand = 68,000; "and five" adds 5.
4(2) 48,000582 > 500, so round up.
5(2) 23,438Numbers from 23,350 to 23,449 round to 23,400.
6(1) 40,075Compare digits from the left; 40,075 has the smallest hundreds digit.
7(2) 45,20635,206 + 10,000 = 45,206.
8(2) 14,000Pattern increases by 500 each time.
9(2) 480Dividing by 100 removes two zeros.
10(2) 55,00155,001 rounds up to 60,000; 54,999 rounds down to 50,000.

Section B (2 marks each)

11. 74,386

12. 56,420; 56,240; 56,204; 56,024

13. 83,500; 82,000 (pattern decreases by 1,500)

14. Nearest hundred: 39,500; Nearest thousand: 39,000 (495 ≥ 500 rounds up to hundreds; 495 < 500 rounds down to thousands)

15. Largest: 97,530; Smallest: 30,579 (smallest cannot start with 0, so 0 goes second)

Section C (4 marks each; 1 mark method, 1 mark accuracy per part)

16. (a) 25,600 + 31,450 = 57,050 buttons (b) 31,450 − 25,600 = 5,850 buttons

17. 8,750 + 36,900 = 45,650 50,000 − 45,650 = $4,350

18. 12 × 350 = 4,200 4,200 − 1,250 = 2,950 books

19. 48,000 − 15,275 = 32,725 children 32,725 − 15,275 = 17,450 more children

20. 8,450 + 7,985 = 16,435 20,000 − 16,435 = $3,565

Total: 40 marks