Class 8 Maths – Chapter 8

Comparing Quantities

Important Exam Questions (VSA / SA / LA)

                                           

  

A. Very Short Answer (1 Mark)

1. Write the formula for Simple Interest.

Answer: SI = (P × R × T) / 100

2. What is meant by discount?

Answer: Discount is the reduction given on the marked price.

3. Convert 45% into fraction.

Answer: 45% = 45/100 = 9/20

B. Short Answer (2–3 Marks)

4. Find 20% of 350.

Solution:

20% = 20/100

= (20/100) × 350

= 70

5. CP = ₹800, SP = ₹920. Find gain and gain %.

Solution:

Gain = SP − CP = 920 − 800 = ₹120

Gain % = (120 / 800) × 100 = 15%

6. Find SI on ₹2000 at 5% per annum for 3 years.

Solution:

SI = (2000 × 5 × 3) / 100

= ₹300

C. Long Answer (5 Marks)

7. A shirt is marked at ₹1200. A discount of 25% is given.

(i) Find the discount.

(ii) Find the selling price.

Solution:

Discount = (25/100) × 1200 = ₹300

Selling Price = MP − Discount

= 1200 − 300

= ₹900

8. Find the amount after 2 years if ₹5000 is invested at 10% per annum.

Solution:

SI = (5000 × 10 × 2) / 100 = ₹1000

Amount = P + SI

= 5000 + 1000

= ₹6000

📝 Examiner Tip:

• Always write the formula
• Show calculations clearly
• Box the final answer