Primary 5 Mathematics Weighted Assessment 3 (Term 3) Paper 4

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: 7/8 × 4/9 × 6/7

• (A) 1/3 (B) 2/3 (C) 4/9 (D) 2/7 Answer: ( )

2. Find 65% of 160:

• (A) 100 (B) 104 (C) 108 (D) 112 Answer: ( )

3. Volume of cuboid: 15cm × 8cm × 6cm

• (A) 720 cm³ (B) 750 cm³ (C) 780 cm³ (D) 800 cm³ Answer: ( )

4. In triangle DEF, angle D = 52°, angle E = 78°. Angle F = ?

• (A) 40° (B) 45° (C) 50° (D) 55° Answer: ( )

5. Express ratio 35:42 in simplest form:

• (A) 5:6 (B) 7:8 (C) 15:18 (D) 25:30 Answer: ( )

6. If 12 pencils cost $36, cost of 20 pencils:

• (A) $50 (B)$55 (C) $60 (D)$65 Answer: ( )

7. What is 8.75 × 100?

• (A) 87.5 (B) 875 (C) 8750 (D) 0.875 Answer: ( )

8. A scalene triangle has:

• (A) All sides equal (B) Two sides equal (C) All sides different (D) All angles equal Answer: ( )

9. Area of trapezium: parallel sides 12cm, 8cm, height 5cm

• (A) 40 cm² (B) 50 cm² (C) 60 cm² (D) 100 cm² Answer: ( )

10. Calculate: 5/6 - 3/8

• (A) 2/14 (B) 9/24 (C) 11/24 (D) 1/4 Answer: ( )

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Section B: Short Answer (20 marks)

11. Calculate: 4 1/6 × 1 2/5 [4 marks]

12. Find 48% of 175, then find what percentage 36 is of 120 [4 marks]

13. Rectangle area 180 cm², width 12cm. Find length and perimeter [4 marks]

14. Convert: 3.25 hours to minutes, and 7800 mL to litres [4 marks]

15. In ratio 9:5, if difference is 28, find both numbers [4 marks]

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Section C: Word Problems (25 marks)

16. [6 marks] Ravi spent 2/7 of his pocket money on a game and 3/10 on snacks. He saved $32. What was his original pocket money?

17. [6 marks] A electronics store offers 25% discount on all items. After discount, 6% GST is added. If a calculator originally costs $80, what is the final price?

18. [6 marks] A rectangular swimming pool has dimensions 20m × 12m × 1.8m. If it's currently 5/6 full, how many more litres are needed to fill it completely? (1 m³ = 1000L)

19. [7 marks] In a quadrilateral PQRS, angle P:angle Q = 2:3, angle R = 95°, angle S = 85°. Find angles P and Q.

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END OF PAPER

TuitionGoWhere P5 Maths WA3 2026 v4 - Answer Key

Section A: Multiple Choice (10 marks)

1. (A) - 7/8 × 4/9 × 6/7 = 168/504 = 1/3
2. (B) - 65% of 160 = 0.65 × 160 = 104
3. (A) - Volume = 15 × 8 × 6 = 720 cm³
4. (C) - Third angle = 180° - 52° - 78° = 50°
5. (A) - 35:42 = 5:6 (divide by 7)
6. (C) - 1 pencil = $3, so 20 pencils =$60
7. (B) - 8.75 × 100 = 875
8. (C) - Scalene triangle has all sides different
9. (B) - Area = 1/2 × (12+8) × 5 = 50 cm²
10. (C) - 5/6 - 3/8 = 20/24 - 9/24 = 11/24

Section B: Short Answer (20 marks)

11. 4 1/6 × 1 2/5 = 25/6 × 7/5 = 175/30 = 5 5/6

12. 48% of 175 = 0.48 × 175 = 84 36/120 = 3/10 = 30%

13. Length = 180 ÷ 12 = 15 cm Perimeter = 2(15 + 12) = 54 cm

14. 3.25 hours = 195 minutes 7800 mL = 7.8 L

15. Difference = 9 parts - 5 parts = 4 parts = 28 1 part = 7 Larger number = 9 × 7 = 63 Smaller number = 5 × 7 = 35

Section C: Word Problems (25 marks)

16. Let pocket money = x Spent = 2/7 × x + 3/10 × x = 20/70 × x + 21/70 × x = 41/70 × x Saved = x - 41/70 × x = 29/70 × x = $32 x =$32 × 70/29 = $77.24

  Answer: Ravi had $77.24 originally.

17. After 25% discount = $80 × 0.75 =$60 GST = 6% of $60 =$3.60 Final price = $60 +$3.60 = $63.60

  Answer: Final price is $63.60.

18. Total volume = 20 × 12 × 1.8 = 432 m³ Current water = 5/6 × 432 = 360 m³ Space remaining = 432 - 360 = 72 m³ In litres = 72 × 1000 = 72,000 L

  Answer: 72,000 litres needed.

19. Angle P + Angle Q = 360° - 95° - 85° = 180° Let angle P = 2x, angle Q = 3x 2x + 3x = 180° 5x = 180°, x = 36° Angle P = 72°, Angle Q = 108°

  Answer: Angle P = 72°, Angle Q = 108°.