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Primary 5 Mathematics Practice Paper 3

Free P5 Maths Practice Paper 3, Ox AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 5 Mathematics AI Generated Generated by Ox Alpha Updated 2026-08-27

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Answers

TuitionGoWhere Practice Paper - Mathematics Primary 5

Answer Scheme — Whole Numbers, Version 3 of 5 (Total: 55 marks)

Section A (Q1–5)

1. Seven million, forty-six thousand, two hundred and three [2]

2. 9,305,028 [2]

3. (a) 80,000 [1] (b) 3 [1]

4. (a) 13,500 [1] (b) 9 [1]

5. 36 ÷ 4 × 3 + 5 − 2 = 9 × 3 + 5 − 2 = 27 + 5 − 2 = 30 [2]

Section B (Q6–15)

6. 4,258,000 ; 4,250,080 ; 4,205,800 ; 4,205,080 [2]

7. (a) 6,483,000 [1] (b) 6,480,000 [1]

8. Rule: subtract 250,000 each time → 8,150,000 and 7,900,000 [2]

9. (a) 24 − 4 × 5 = 24 − 20 = 4 [1] (b) 24 ÷ 4 = 6 [1]

10. 7 × ⬜ = 90 + 15 = 105 → ⬜ = 15 [2]

11. 48 × 125 = 6,000 pens [2]

12. (a) 4,256 ÷ 25 = 170 remainder 6 → 170 bags [2] (b) 6 stickers [1]

13. (a) 12,800 [1] (b) 700 [1] (c) 9,400 [1]

14. 245 × 36 = 8,820 books; 8,820 − 1,850 = 6,970 books [3]

15. Place the largest odd digit (9) last; arrange the rest smallest-first with no leading zero: 2,045,789 [3]

Section C (Q16–20)

16. Seats: 128 × 96 = 12,288; Empty: 12,288 − 9,540 = 2,748 seats [4]

17. Cost of shirts: 36 × 48 = 1,728;Atfirst:1,728+1,276=1,728; At first: 1,728 + 1,276 = **3,004** [4]

18. (a) Greatest common factor of 864 and 720 is 144 → 144 bags [2] (b) Apples: 864 ÷ 144 = 6; Oranges: 720 ÷ 144 = 5; Total: 6 + 5 = 11 fruits [2]

19. Savings: 285 × 36 months = 10,260;Left:10,2604,500=10,260; Left: 10,260 − 4,500 = **5,760** [4]

20. Larger = 4 × smaller + 50; Sum: smaller + 4 × smaller + 50 = 1,250 → 5 × smaller = 1,200 → smaller = 240; larger = 1,250 − 240 = 1,010. Check: 1,010 ÷ 240 = 4 remainder 50 ✓ [5]