Primary 5 Mathematics Weighted Assessment 3 (Term 3) Paper 5

TUITIONGOWHERE PRIMARY SCHOOL (AI)

WEIGHTED ASSESSMENT 3 EXAMINATION 2026

PRIMARY 5 MATHEMATICS

Duration: 1 hour 15 minutes Total Marks: 55

Name: _________________ ( ) Class: Primary 5 ( ) Date: _________________

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Instructions

1. Write your answers in the spaces provided
2. Show all working clearly
3. Calculators are NOT allowed

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Section A: Multiple Choice (10 marks)

1. Calculate: 6/7 × 5/9 × 3/10

• (A) 1/7 (B) 2/21 (C) 1/14 (D) 5/42 Answer: ( )

2. Find 72% of 125:

• (A) 88 (B) 90 (C) 92 (D) 95 Answer: ( )

3. Volume of cuboid: 18cm × 10cm × 5cm

• (A) 850 cm³ (B) 900 cm³ (C) 950 cm³ (D) 1000 cm³ Answer: ( )

4. In triangle GHI, angle G = 65°, angle H = 58°. Angle I = ?

• (A) 55° (B) 57° (C) 59° (D) 61° Answer: ( )

5. Simplify ratio 48:64:

• (A) 2:3 (B) 3:4 (C) 4:5 (D) 6:8 Answer: ( )

6. If 15 markers cost $45, cost of 25 markers:

• (A) $70 (B)$75 (C) $80 (D)$85 Answer: ( )

7. What is 5.6 × 1000?

• (A) 56 (B) 560 (C) 5600 (D) 56000 Answer: ( )

8. An isosceles triangle has:

• (A) All sides equal (B) Two sides equal (C) No sides equal (D) Two angles equal Answer: ( )

9. Area of parallelogram: base 18cm, height 11cm

• (A) 29 cm² (B) 58 cm² (C) 198 cm² (D) 396 cm² Answer: ( )

10. Calculate: 9/10 - 2/5

• (A) 7/5 (B) 1/2 (C) 7/10 (D) 4/10 Answer: ( )

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Section B: Short Answer (20 marks)

11. Calculate: 5 2/9 × 1 1/4 [4 marks]

12. Find 36% of 200, then express 48 out of 160 as percentage [4 marks]

13. Rectangle area 216 cm², length 18cm. Find width and perimeter [4 marks]

14. Convert: 4.8 hours to minutes, and 9500 mL to litres [4 marks]

15. In ratio 7:3, if total is 150, find both parts [4 marks]

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Section C: Word Problems (25 marks)

16. [6 marks] Mei Ling used 3/8 of her savings for a bicycle and 1/5 for books. She had $85 left. How much savings did she have initially?

17. [6 marks] A bookstore gives 18% discount on all books. After discount, 5% GST is added. If a book originally costs $60, what is the final amount paid?

18. [6 marks] A cylindrical water tank has base area 20 m² and height 4m. If it's 3/4 full, how many litres of water does it contain? (1 m³ = 1000L)

19. [7 marks] In triangle ABC, angle A is twice angle B, and angle C is 30° more than angle B. Find all three angles.

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END OF PAPER

TuitionGoWhere P5 Maths WA3 2026 v5 - Answer Key

Section A: Multiple Choice (10 marks)

1. (C) - 6/7 × 5/9 × 3/10 = 90/630 = 1/7
2. (B) - 72% of 125 = 0.72 × 125 = 90
3. (B) - Volume = 18 × 10 × 5 = 900 cm³
4. (B) - Third angle = 180° - 65° - 58° = 57°
5. (B) - 48:64 = 3:4 (divide by 16)
6. (B) - 1 marker = $3, so 25 markers =$75
7. (C) - 5.6 × 1000 = 5600
8. (B) - Isosceles triangle has two sides equal
9. (C) - Area = base × height = 18 × 11 = 198 cm²
10. (B) - 9/10 - 2/5 = 9/10 - 4/10 = 5/10 = 1/2

Section B: Short Answer (20 marks)

11. 5 2/9 × 1 1/4 = 47/9 × 5/4 = 235/36 = 6 19/36

12. 36% of 200 = 0.36 × 200 = 72 48/160 = 3/10 = 30%

13. Width = 216 ÷ 18 = 12 cm Perimeter = 2(18 + 12) = 60 cm

14. 4.8 hours = 288 minutes 9500 mL = 9.5 L

15. Total parts = 7 + 3 = 10 1 part = 150 ÷ 10 = 15 7 parts = 105, 3 parts = 45

Section C: Word Problems (25 marks)

16. Let savings = x Used = 3/8 × x + 1/5 × x = 15/40 × x + 8/40 × x = 23/40 × x Left = x - 23/40 × x = 17/40 × x = $85 x =$85 × 40/17 = $200

  Answer: Mei Ling had $200 initially.

17. After 18% discount = $60 × 0.82 =$49.20 GST = 5% of $49.20 =$2.46 Final amount = $49.20 +$2.46 = $51.66

  Answer: Final amount paid is $51.66.

18. Volume = base area × height = 20 × 4 = 80 m³ Water = 3/4 × 80 = 60 m³ In litres = 60 × 1000 = 60,000 L

  Answer: Tank contains 60,000 litres.

19. Let angle B = x Angle A = 2x, Angle C = x + 30° x + 2x + (x + 30°) = 180° 4x + 30° = 180° 4x = 150°, x = 37.5° Angle A = 75°, Angle B = 37.5°, Angle C = 67.5°

  Answer: Angles are 75°, 37.5°, and 67.5°.