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Quiz

Grade 8: Powers and roots

10 questions with solutions for grade 8: powers with integer base and natural exponent, square and cube roots, a · 10ᵏ notation, multiplying and dividing powers.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. (−2)⁴ = ?

2. −2⁴ = ?

3. 3² × 3³ = 3ⁿ. What is n?

4. 5⁸ : 5⁵ = 5ⁿ. What is n?

5. (2³)² = ?

6. √144 = ?

7. ∛125 = ?

8. 45 000 = 4.5 × 10ⁿ. What is n?

9. 7.2 × 10³ = ?

10. √(16 × 25) = ?