Scientific Notations - upen.in

Scientific Notation MCQs

Scientific Notation – Class 8

1. What is (2.5 × 10³) + (3.5 × 10³)?

a) 6 × 10³ b) 6.0 × 10³ c) 60 × 10²

2. What is (5.6 × 10⁴) + (7.0 × 10³)?

a) 12.6 × 10⁴ b) 6.3 × 10⁴ c) 6.3 × 10⁴

3. What is (4.5 × 10⁵) − (1.5 × 10⁵)?

a) 3.0 × 10⁵ b) 30 × 10⁴ c) 2.5 × 10⁵

4. What is (8.2 × 10⁶) − (3.2 × 10⁶)?

a) 11.4 × 10⁶ b) 4.2 × 10⁵ c) 5.0 × 10⁶

5. What is (2 × 10³) × (3 × 10²)?

a) 6 × 10⁴ b) 6 × 10⁵ c) 5 × 10⁵

6. What is (4 × 10⁴) × (2 × 10²)?

a) 8 × 10⁶ b) 6 × 10⁶ c) 7 × 10⁶

7. What is (6 × 10⁵) ÷ (3 × 10²)?

a) 3 × 10⁷ b) 2 × 10³ c) 2 × 10³

8. What is (9 × 10⁶) ÷ (3 × 10³)?

a) 3 × 10³ b) 6 × 10³ c) 2 × 10³