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

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: 4/5 × 3/7 × 5/6

• (A) 1/2 (B) 2/3 (C) 12/35 (D) 5/7 Answer: ( )

2. Find 55% of 180:

• (A) 95 (B) 97 (C) 99 (D) 101 Answer: ( )

3. Volume of cuboid: 12cm × 8cm × 6cm

• (A) 476 cm³ (B) 576 cm³ (C) 584 cm³ (D) 592 cm³ Answer: ( )

4. In triangle PQR, angle P = 68°, angle Q = 72°. Angle R = ?

• (A) 35° (B) 40° (C) 42° (D) 45° Answer: ( )

5. Simplify ratio 24:36

• (A) 2:3 (B) 3:4 (C) 4:6 (D) 6:9 Answer: ( )

6. If 9 erasers cost $18, cost of 15 erasers:

• (A) $28 (B)$30 (C) $32 (D)$35 Answer: ( )

7. Convert: 6.25 × 10

• (A) 6.250 (B) 62.5 (C) 625 (D) 0.625 Answer: ( )

8. Equilateral triangle has all angles equal to:

• (A) 30° (B) 45° (C) 60° (D) 90° Answer: ( )

9. Area of rhombus: base 16cm, height 12cm

• (A) 28 cm² (B) 56 cm² (C) 192 cm² (D) 96 cm² Answer: ( )

10. Calculate: 11/12 - 2/3

• (A) 1/4 (B) 3/12 (C) 9/12 (D) 1/3 Answer: ( )

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Section B: Short Answer (20 marks)

11. Calculate: 3 2/5 × 2 1/7 [4 marks]

12. Find 42% of 250, then find what percentage 35 is of 140 [4 marks]

13. Rectangle area 126 cm², length 14cm. Find width and perimeter [4 marks]

14. Convert: 4.5 hours to minutes, and 5200 mL to litres [4 marks]

15. Ratio 7:4. If total is 132, find both parts [4 marks]

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Section C: Word Problems (25 marks)

16. [6 marks] Priya spent 1/2 of her money on a dress and 3/10 on accessories. She had $45 left. Find her initial amount.

17. [6 marks] A furniture store offers 30% discount. After discount, 8% GST is added. Original price $250. Find final amount paid.

18. [6 marks] Water tank (cuboid): 6m × 4m × 3m. Currently 2/3 full. How many more litres needed to fill? (1 m³ = 1000L)

19. [7 marks] In triangle ABC, angles are in ratio 3:4:5. Find all three angles.

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END OF PAPER

TuitionGoWhere P5 Maths WA3 2026 v3 - Answer Key

Section A: Multiple Choice (10 marks)

1. (A) - 4/5 × 3/7 × 5/6 = 60/210 = 2/7
2. (C) - 55% of 180 = 0.55 × 180 = 99
3. (B) - Volume = 12 × 8 × 6 = 576 cm³
4. (B) - Third angle = 180° - 68° - 72° = 40°
5. (A) - 24:36 = 2:3 (divide by 12)
6. (B) - 1 eraser = $2, so 15 erasers =$30
7. (B) - 6.25 × 10 = 62.5
8. (C) - Equilateral triangle angles = 60°
9. (C) - Area = base × height = 16 × 12 = 192 cm²
10. (A) - 11/12 - 2/3 = 11/12 - 8/12 = 3/12 = 1/4

Section B: Short Answer (20 marks)

11. 3 2/5 × 2 1/7 = 17/5 × 15/7 = 255/35 = 7 2/7

12. 42% of 250 = 0.42 × 250 = 105 35/140 = 1/4 = 25%

13. Width = 126 ÷ 14 = 9 cm Perimeter = 2(14 + 9) = 46 cm

14. 4.5 hours = 4.5 × 60 = 270 minutes 5200 mL = 5200 ÷ 1000 = 5.2 L

15. Total parts = 7 + 4 = 11 1 part = 132 ÷ 11 = 12 7 parts = 7 × 12 = 84 4 parts = 4 × 12 = 48

Section C: Word Problems (25 marks)

16. Let initial money = x Money spent = 1/2 × x + 3/10 × x = 5/10 × x + 3/10 × x = 8/10 × x Money left = x - 8/10 × x = 2/10 × x = $45 Therefore x =$45 × 10/2 = $225

  Answer: Priya had $225 initially.

17. After 30% discount = $250 × 0.7 =$175 GST = 8% of $175 =$175 × 0.08 = $14 Final amount =$175 + $14 =$189

  Answer: Final amount paid is $189.

18. Total volume = 6 × 4 × 3 = 72 m³ Current water = 2/3 × 72 = 48 m³ Space remaining = 72 - 48 = 24 m³ In litres = 24 × 1000 = 24,000 L

  Answer: 24,000 more litres needed.

19. Let angles be 3x, 4x, 5x 3x + 4x + 5x = 180° 12x = 180° x = 15° Angles are: 45°, 60°, 75°

  Answer: The three angles are 45°, 60°, and 75°.