This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Simplify the following:(x$^{2}$y)$^{5}$ A) X$^{7}$y$^{5}$. B) X$^{2}$y$^{5}$. C) X$^{10}$y$^{5}$. D) X$^{5}$y$^{5}$. Show Answer Correct Answer: C) X$^{10}$y$^{5}$. 2. The exponential form of 64 is: A) 2$^{6}$. B) 2$^{5}$. C) 2$^{7}$. D) 3$^{4}$. Show Answer Correct Answer: A) 2$^{6}$. 3. 000 is equivalent to A) 10$^{-4}$. B) 10$^{-5}$. C) 10$^{4}$. D) 10$^{5}$. Show Answer Correct Answer: B) 10$^{-5}$. 4. What is the result of 5$^{2}$ x 5$^{3}$? A) 5$^{4}$. B) 5$^{6}$. C) 5$^{5}$. D) 5$^{7}$. Show Answer Correct Answer: C) 5$^{5}$. 5. X 700 = A) 2, 100. B) 21, 000. C) 2, 100, 000. D) 210, 000. Show Answer Correct Answer: D) 210, 000. 6. How do you multiply two powers with the same base, such as a$^{m}$ and a$^{n}$? A) You subtract the exponents:a$^{m-n}$. B) You multiply the bases:a$^{m}$ * a$^{n}$. C) You add the exponents:a$^{m+n}$. D) You raise the base to the power of the sum:(a$^{m}$)$^{n}$. Show Answer Correct Answer: C) You add the exponents:a$^{m+n}$. 7. What is 10 x 10 x 10 x 10 written as an exponent? A) 10$^{2}$. B) 10$^{4}$. C) 10, 000. D) 40, 000. Show Answer Correct Answer: B) 10$^{4}$. 8. 3$^{-2}$ x 3$^{-5}$ is equal to: A) 3$^{-7}$. B) 3$^{-3}$. C) 3$^{-10}$. D) 3$^{7}$. Show Answer Correct Answer: A) 3$^{-7}$. 9. The area of a rectangle is $72r^5s^2t^7$ $3r^2t^4$ A) $69r^2s^2t^2$. B) $14r^3st$. C) $36r^2t^4$. D) $24r^3s^2t^3$. Show Answer Correct Answer: D) $24r^3s^2t^3$. 10. 4x$^{2 }$* 3x A) 7x$^{2}$. B) 7x$^{3}$. C) 12x$^{3}$. D) 12x$^{2}$. Show Answer Correct Answer: C) 12x$^{3}$. 11. Express the following number as powers of ten:1 A) 10$^{1}$. B) 10$^{-1}$. C) 10$^{0}$. D) It cannot be expressed in powers of ten. Show Answer Correct Answer: C) 10$^{0}$. 12. THE POINT (4, 5) IS ..... UNITS AWAY FROM Y AXIS. A) 4. B) 5. C) 1. D) 9. Show Answer Correct Answer: A) 4. 13. X$^{5}$y$^{3}$ / x$^{}$y$^{2}$ A) X$^{4}$y. B) X$^{2}$y. C) X$^{4}$y$^{2}$. D) X$^{6}$y$^{5}$. Show Answer Correct Answer: A) X$^{4}$y. 14. Express 343 as a power of 7. A) 7$^{5}$. B) 6$^{4}$. C) 5$^{8}$. D) 7$^{3}$. Show Answer Correct Answer: D) 7$^{3}$. 15. Simplify:2x$^{2}$ (3xyz$^{4}$) A) 5x$^{3}$yz$^{4}$. B) 6x$^{3}$yz$^{4}$. C) 8x$^{2}$yz$^{4}$. D) 8x$^{3}$yz$^{4}$. Show Answer Correct Answer: B) 6x$^{3}$yz$^{4}$. 16. Which one is greater:2$^{8}$ or 8$^{2}$ A) 2$^{8}$ > 8$^{2}$. B) 2$^{8}$ < 8$^{2}$. C) All the above. D) None of the above. Show Answer Correct Answer: A) 2$^{8}$ > 8$^{2}$. 17. 2$^{3}$ x 2$^{2}$= ..... A) 2$^{6}$. B) 2$^{5}$. C) 4$^{5}$. D) 4$^{6}$. Show Answer Correct Answer: B) 2$^{5}$. 18. EVALUATE \{[1/3]$^{-1}$-[1/4]$^{-1}$\}$^{-1}$ A) 1. B) -1. C) 1/1. D) ALL OF THESE. Show Answer Correct Answer: B) -1. 19. 2n$^{4}$ * 5n$^{4}$ A) 7n$^{4}$. B) 10$^{}$n$^{16}$. C) 10n$^{8}$. D) None of the above. Show Answer Correct Answer: C) 10n$^{8}$. 20. $4c^8d^{-3}\cdot5c^{-5}d^{-1}$ A) $9c^3d^4$. B) $\frac{20c^3}{d^4}$. C) $20c^3d^4$. D) $\frac{20}{c^3d^4}$. Show Answer Correct Answer: B) $\frac{20c^3}{d^4}$. 21. Express 0.00000000837 in standard form. A) $8.37\times10^{-9}$. B) $83.7\times10^{-9}$. C) $8.37\times10^{-9}$. D) $0.837\times10^{-10}$. Show Answer Correct Answer: A) $8.37\times10^{-9}$. 22. 9 x 10$^{1}$ A) 900. B) 90. C) 9, 000. D) 9. Show Answer Correct Answer: B) 90. 23. Explain the error in the simplification below:x$^{3}$yx$^{-4}$z$^{-2}$=x$^{-1}$yz$^{-2}$ A) Should have multiplied the x exponents. B) Should have subtracted the x exponents. C) Should have moved the negative exponents to the bottom of a fraction. D) There is no error. Show Answer Correct Answer: C) Should have moved the negative exponents to the bottom of a fraction. 24. Rikkie has 10$^{3 }$rings. If Rikkie gives 10$^{2 }$rings away to Ms. Frizzelle, how many rings does Rikkie have left? A) $ 1900. B) $ 920. C) $ 900. D) $ 9. Show Answer Correct Answer: C) $ 900. 25. Simplify:(a$^{4}$b$^{19}$)$^{0}$ A) 1. B) 0. C) A$^{4}$b$^{19}$. D) A$^{-4}$b$^{-19}$. Show Answer Correct Answer: A) 1. ← 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 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 10Class 8 Maths Chapter 12 Exponents And Powers Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books