This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Simplify $a\cdot a^3$ A) $a^3$. B) $a^4$. C) $a^6$. D) $a^2$. Show Answer Correct Answer: B) $a^4$. 2. $\frac{32x^6}{4x^3}$ A) $\left(2x\right)^3$. B) $8x$. C) $8x^2$. D) $2x^3$. Show Answer Correct Answer: A) $\left(2x\right)^3$. 3. What is the numerical expression as a power? $\left(10\right)\left(10\right)$ A) $10^2$. B) $2^{10}$. C) $100$. D) $20$. Show Answer Correct Answer: A) $10^2$. 4. When you raise a power to a power you ..... the exponents. A) Add. B) Subtract. C) Multiply. D) Divide. Show Answer Correct Answer: C) Multiply. 5. What is 3$^{5}$ times 3$^{5}$? A) 3$^{10}$. B) 9$^{10}$. C) 3$^{25}$. D) 9$^{25}$. Show Answer Correct Answer: A) 3$^{10}$. 6. $Simplify$ $\left(\frac{1}{5}\right)^{-1}+\left(\frac{1}{3}\right)^{-1}-2^3$ A) 8. B) 1. C) 2. D) 0. Show Answer Correct Answer: D) 0. 7. (r$^{4}$)$^{6}$ A) 10r. B) R$^{10}$. C) 24r. D) R$^{24}$. Show Answer Correct Answer: D) R$^{24}$. 8. $\left(5^5+5^2\right)=5^7$ A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. How can you write 100, 000 as a power of 10 using exponents? A) $10^4$. B) $10^6$. C) $10^5$. D) $10^3$. Show Answer Correct Answer: C) $10^5$. 10. What is the exponent and base of the expression below? $\left(-2\right)^4$ A) Base = 4 and exp =-2. B) Base = 4 and exp = 2. C) Base =-2 and exp = 4. D) Base = 2 and exp = 4. Show Answer Correct Answer: C) Base =-2 and exp = 4. 11. What is the value of the expression below? $-4^5$ A) -20. B) -1024. C) -625. D) None of the above. Show Answer Correct Answer: B) -1024. 12. Which of the following is equal to $7 \times 10^3$ A) 70. B) 70, 000. C) 7, 000. D) 700. Show Answer Correct Answer: C) 7, 000. 13. Write the exponent in word form.10$^{5}$ A) The fifth power of ten. B) Fifty. C) The tenth power of five. D) Alot. Show Answer Correct Answer: A) The fifth power of ten. 14. Rewrite $\frac{4^5\cdot x^7}{4^2\cdot x^4}$ A) $4^3\cdot x^3$. B) $4^7\cdot x^3$. C) $4^3\cdot x^4$. D) $4^3\cdot x^7$. Show Answer Correct Answer: A) $4^3\cdot x^3$. 15. What is 4$^{5}$ in expanded form? A) 5 x 5 x 5 x 5. B) 4 x 4 x 4 x 4. C) 5 x 5 x 5 x 5 x 5. D) 4 x 4 x 4 x 4 x 4. Show Answer Correct Answer: D) 4 x 4 x 4 x 4 x 4. 16. 10x10x10 is equal to which? A) 10$^{10}$. B) 10$^{4}$. C) 10$^{5}$. D) 10$^{3}$. Show Answer Correct Answer: C) 10$^{5}$. 17. Find the value.5 x 10$^{6}$ A) 56. B) 500. C) 500, 000. D) 5, 000, 000. Show Answer Correct Answer: D) 5, 000, 000. 18. When you multiply like bases, you ..... the exponents. A) Multiply. B) Add. C) Subtract. D) Divide. Show Answer Correct Answer: B) Add. 19. THE VALUE OF 56$^{0 }$is ..... A) 1. B) 56. C) 0. D) 6. Show Answer Correct Answer: A) 1. 20. Identify the value of the exponent in 8$^{3}$=512$^{}$. A) 8. B) 512. C) 3. D) -3. Show Answer Correct Answer: C) 3. 21. Find and explain the error. 5-3 + 2 5-5 0 A) There is no error. B) Addition was done first and you should have subtracted first. C) There is a subtraction error. D) None of the above. Show Answer Correct Answer: B) Addition was done first and you should have subtracted first. 22. Which of the following is the value of (4 / 5)$^{-9}$ / (4 / 5)$^{-9}$? A) (4 / 5)$^{18}$. B) (4 / 5)$^{-18}$. C) 1. D) (4 / 5). Show Answer Correct Answer: C) 1. 23. Simplify $2^2\cdot2^3$ A) $4\cdot6$. B) 2+2+2+2+2. C) $2^6$. D) $2^5$. Show Answer Correct Answer: D) $2^5$. 24. Simplify:$-3xy\left(-2xy^2\right)^3$ $-3xy\left(\left[-2\right]^1x^1y^2\right)^3$ A) $18x^4y^7$. B) $18x^3y^5$. C) $24x^4y^7$. D) None of the above. Show Answer Correct Answer: C) $24x^4y^7$. 25. What is the power to this problem?6 x 6 x 6 x 6 x 6 x 6 x 6 A) 6 to the 7th power. B) 6 to the 8th power. C) 7 to the 9th power. D) 10 to the 5th power. Show Answer Correct Answer: A) 6 to the 7th power. ← PreviousNext →Related QuizzesClass 8 Maths Chapter 12 Exponents And Powers Quiz 1Class 8 Maths Chapter 12 Exponents And Powers Quiz 2Class 8 Maths Chapter 12 Exponents And Powers Quiz 3Class 8 Maths Chapter 12 Exponents And Powers Quiz 4Class 8 Maths Chapter 12 Exponents And Powers Quiz 5Class 8 Maths Chapter 12 Exponents And Powers Quiz 6Class 8 Maths Chapter 12 Exponents And Powers Quiz 7Class 8 Maths Chapter 12 Exponents And Powers Quiz 8Class 8 Maths Chapter 12 Exponents And Powers Quiz 9Class 8 Maths Chapter 12 Exponents And Powers Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books