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Primary 4 Mathematics Semestral Assessment 1 (Mid-Year) Paper 4
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TUITIONGOWHERE PRIMARY SCHOOL (AI)
SA1 EXAMINATION 2026 (VERSION 4) - ANSWER KEY
PRIMARY 4 MATHEMATICS
Section A: Multiple Choice (20 marks)
1. Answer: (B) 4 In 49,657, the digit 4 is in the ten thousands place.
2. Answer: (C) 12 Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36 GCF = 12
3. Answer: (B) 35/8 4 3/8 = (4 × 8 + 3)/8 = (32 + 3)/8 = 35/8
4. Answer: (C) 2/25 0.08 = 8/100 = 2/25 (simplified)
5. Answer: (B) 121 cm² Area = side × side = 11 × 11 = 121 cm²
6. Answer: (B) 84,600 84,567 → Look at tens (6), round up to 84,600.
7. Answer: (B) 872 7,848 ÷ 9 = 872
8. Answer: (B) 15/18 5/6 = 15/18 (multiply by 3/3)
9. Answer: (A) 0.76, 0.67, 0.607 0.76 > 0.67 > 0.607
10. Answer: (A) 10 cm Perimeter = 2(length + width) 56 = 2(18 + width) 28 = 18 + width Width = 10 cm
11. Answer: (A) 18 LCM of 6 and 9 is 18.
12. Answer: (C) 28 3 1/2 = 7/2 = 28/8, so 28 eighths.
13. Answer: (A) 24,534 4,089 × 6 = 24,534
14. Answer: (B) 4 3/7 31/7 = 31 ÷ 7 = 4 remainder 3 = 4 3/7
15. Answer: (C) 10 Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 (10 factors)
16. Answer: (B) 6.05 6.049 rounded to nearest hundredth: Look at thousandths (9), round up to 6.05.
17. Answer: (B) 1,827 9,135 ÷ 5 = 1,827
18. Answer: (A) 7/9 7/9 = 14/18, 5/6 = 15/18. Since 14/18 < 15/18, 7/9 is smaller.
19. Answer: (A) 65,342 75,342 - 10,000 = 65,342
20. Answer: (B) 8 cm Area = length × width 96 = 12 × width Width = 8 cm
Section B: Short Answer (40 marks)
21. Answer: 38,167
67,845
- 29,678
--------
38,167
22. Answer: 11/15 7/15 + 4/15 = 11/15
23. Answer: 24.38
15.60
+ 8.78
-------
24.38
24. Answer: 17 cm Perimeter = 4 × side 68 = 4 × side Side = 17 cm
25. Answer: 4 5/9 41/9 = 41 ÷ 9 = 4 remainder 5 = 4 5/9
26. Answer: 59,969
8,567
× 7
-------
59,969
27. Answer: 819 6,552 ÷ 8 = 819
28. Answer: 5/9 1/3 = 3/9 3/9 + 2/9 = 5/9
29. Answer: 6.75
20.40
-13.65
------
6.75
30. Answer: 74 cm Perimeter = 2 × (length + width) = 2 × (23 + 14) = 2 × 37 = 74 cm
31. Answer: 1, 2, 3, 6, 9, 18, 27, 54 54 = 1 × 54 = 2 × 27 = 3 × 18 = 6 × 9
32. Answer: 61/8 7 5/8 = (7 × 8 + 5)/8 = (56 + 5)/8 = 61/8
Section C: Word Problems (40 marks)
33. Answer: 19,881 items
Working:
- Started with: 23,456 items
- Received: +8,765 items
- Shipped: -12,340 items
- Items left = 23,456 + 8,765 - 12,340 = 19,881 items
34. Answer: 15,000 pages
Working: Pages in 8 hours = 1,875 × 8 = 15,000 pages
35. Answer: 816 pencils
Working: Pencils per class = 7,344 ÷ 9 = 816 pencils
36. Answer: 5/7
Working: Fraction eaten = 2/7 + 3/7 = 5/7
37. Answer: 9.73 kg
Working: Total mass = 6.25 + 3.48 = 9.73 kg
38. Answer: 1,152 m²
Working:
- Area of field = 45 × 28 = 1,260 m²
- Area of shed = 12 × 9 = 108 m²
- Area not covered = 1,260 - 108 = 1,152 m²
39. Answer: $10,590
Working:
- Spending per month = 685 = $1,765
- Spending in 6 months = 10,590
40. Answer: 2,789 cupcakes
Working:
- Monday: 3,678 cupcakes
- Tuesday: 3,678 + 1,456 = 5,134 cupcakes
- Wednesday: 5,134 - 2,345 = 2,789 cupcakes
~ End of Answer Key ~