This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Mathematics > Exponents And Powers > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The area of a rectangle is $72r^5s^2t^7$ $3r^2t^4$ A) $36r^2t^4$. B) $24r^3s^2t^3$. C) $69r^2s^2t^2$. D) $14r^3st$. Show Answer Correct Answer: B) $24r^3s^2t^3$. 2. Express the following number as powers of ten:1 A) 10$^{-1}$. B) 10$^{1}$. C) It cannot be expressed in powers of ten. D) 10$^{0}$. Show Answer Correct Answer: D) 10$^{0}$. 3. THE POINT (4, 5) IS ..... UNITS AWAY FROM Y AXIS. A) 9. B) 5. C) 1. D) 4. Show Answer Correct Answer: D) 4. 4. X$^{5}$y$^{3}$ / x$^{}$y$^{2}$ A) X$^{4}$y. B) X$^{4}$y$^{2}$. C) X$^{6}$y$^{5}$. D) X$^{2}$y. Show Answer Correct Answer: A) X$^{4}$y. 5. Express 343 as a power of 7. A) 5$^{8}$. B) 6$^{4}$. C) 7$^{5}$. D) 7$^{3}$. Show Answer Correct Answer: D) 7$^{3}$. 6. Simplify:2x$^{2}$ (3xyz$^{4}$) A) 6x$^{3}$yz$^{4}$. B) 8x$^{3}$yz$^{4}$. C) 8x$^{2}$yz$^{4}$. D) 5x$^{3}$yz$^{4}$. Show Answer Correct Answer: A) 6x$^{3}$yz$^{4}$. 7. 2$^{3}$ x 2$^{2}$= ..... A) 4$^{6}$. B) 2$^{6}$. C) 4$^{5}$. D) 2$^{5}$. Show Answer Correct Answer: D) 2$^{5}$. 8. 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. 9. 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$^{8}$. 10. $4c^8d^{-3}\cdot5c^{-5}d^{-1}$ A) $\frac{20}{c^3d^4}$. B) $20c^3d^4$. C) $\frac{20c^3}{d^4}$. D) $9c^3d^4$. Show Answer Correct Answer: C) $\frac{20c^3}{d^4}$. 11. Express 0.00000000837 in standard form. A) $83.7\times10^{-9}$. B) $8.37\times10^{-9}$. C) $8.37\times10^{-9}$. D) $0.837\times10^{-10}$. Show Answer Correct Answer: B) $8.37\times10^{-9}$. 12. Explain the error in the simplification below:x$^{3}$yx$^{-4}$z$^{-2}$=x$^{-1}$yz$^{-2}$ A) Should have moved the negative exponents to the bottom of a fraction. B) Should have multiplied the x exponents. C) Should have subtracted the x exponents. D) There is no error. Show Answer Correct Answer: A) Should have moved the negative exponents to the bottom of a fraction. 13. Rikkie has 10$^{3 }$rings. If Rikkie gives 10$^{2 }$rings away to Ms. Frizzelle, how many rings does Rikkie have left? A) $ 920. B) $ 1900. C) $ 900. D) $ 9. Show Answer Correct Answer: C) $ 900. 14. Simplify:(a$^{4}$b$^{19}$)$^{0}$ A) A$^{-4}$b$^{-19}$. B) A$^{4}$b$^{19}$. C) 0. D) 1. Show Answer Correct Answer: D) 1. 15. What is the value of $5^0$ A) 10. B) 1. C) 5. D) 0. Show Answer Correct Answer: B) 1. 16. What is the value of 100$^{0}$? A) 1. B) 0. C) 100. D) None of the above. Show Answer Correct Answer: A) 1. 17. Power of a Power means you keep the base and (a) the exponents. A) Add. B) Divide. C) Subtract. D) A. multiply. Show Answer Correct Answer: D) A. multiply. 18. Simplify the expression:$5^3 \times 5^{-1}$ A) $5^2$. B) $5^4$. C) $5^3$. D) $5^{-2}$. Show Answer Correct Answer: A) $5^2$. 19. THE VALUE OF \{6$^{-1}$+[3/2]$^{-1}$\}$^{-1}$ IS: A) -6/-5. B) 5/6. C) 6/5. D) 0. Show Answer Correct Answer: C) 6/5. 20. The multiplicative inverse of 7 is: A) 14. B) 1/7. C) 49. D) 5. Show Answer Correct Answer: B) 1/7. 21. 10 x10 x 10 x 10 x 10 A) Ten to the power of five. B) 1, 000, 000. C) $10^6$. D) $10^4$. Show Answer Correct Answer: A) Ten to the power of five. 22. Which is the base3 raise to 4 = 81 A) 81. B) 4. C) 3. D) 3 and 4. Show Answer Correct Answer: C) 3. 23. Simplify $\frac{\left(p^4q^3\right)}{r^3}\times\frac{\left(p^2r^4\right)}{q^3}\times\frac{\left(q^{-2}r^3\right)}{p^{-3}}$ A) A. $p^9q^{-8}r^4$. B) $p^{-9}q^8r^{-4}$. C) $p^9q^8r^{-4}$. D) $p^{-8}q^8r^7$. Show Answer Correct Answer: A) A. $p^9q^{-8}r^4$. 24. FIND THE VALUE OF.(3$^{6}$+5$^{9}$+6$^{7}$+8$^{9}$)$^{0}$ A) 0. B) 1, 85, 30, 20, 18, 88,. C) 1. D) 965227534. Show Answer Correct Answer: C) 1. 25. What is the value of 18$^{1}$? A) 20. B) 18. C) 17. D) 16. Show Answer Correct Answer: B) 18. 26. Rewrite $\frac{3^5}{3^2}$ A) $3 \times 3 \times 3$. B) $3 \times 3 \times 3 \times 3 \times 3$. C) $3^2$. D) $3^3$. Show Answer Correct Answer: D) $3^3$. 27. Express the following in scientific notation:10, 030, 400, 000 A) 1.00304 x 10$^{}$$^{10}$. B) 1.00304 x10$^{-10}$. C) 1.00304 x 10$^{9}$. D) 1.00403 x 10$^{10}$. Show Answer Correct Answer: A) 1.00304 x 10$^{}$$^{10}$. 28. Expand:$\left(\frac{-2}{b}\right)^4$ A) $\left(-2\right)\div b$. B) $\left(-2\right)^4\div b^4$. C) $\left(-2b^4\right)$. D) None of the above. Show Answer Correct Answer: B) $\left(-2\right)^4\div b^4$. 29. What is the result of 7$^{1}$? A) 7. B) 5. C) 1. D) 10. Show Answer Correct Answer: A) 7. 30. If (-2)$^{x}$ =-128, find x A) 7. B) 6. C) 5. D) None of the above. Show Answer Correct Answer: A) 7. 31. Which of the following is equal to $10^2$ A) 1000. B) 100. C) 10. D) 20. Show Answer Correct Answer: B) 100. 32. Simplify:(x$^{3}$y$^{2}$)(xy$^{4}$) A) X$^{4}$y$^{8}$. B) X$^{4}$y$^{6}$. C) X$^{3}$y$^{8}$. D) X$^{3}$y$^{6}$. Show Answer Correct Answer: B) X$^{4}$y$^{6}$. 33. ) Simplify(45x$^{6}$y$^{2}$)/(5x$^{4}$y$^{9}$) A) 9x$^{2}$y$^{7}$. B) 40x$^{2}$y$^{7}$. C) 9x$^{10}$y$^{11}$. D) (9x$^{2}$)/y$^{7}$. Show Answer Correct Answer: D) (9x$^{2}$)/y$^{7}$. 34. If Tamara's horse eats about 5, 000 pounds of hay each year, how can you write 5, 000 using exponents? A) $5 \times 10^4$. B) $5 \times 10^2$. C) $5 \times 10^1$. D) $5 \times 10^3$. Show Answer Correct Answer: D) $5 \times 10^3$. 35. (2x$^{7}$)$^{3}$ A) 6x$^{10}$. B) 8x$^{10}$. C) 8x$^{21}$. D) 6x$^{21}$. Show Answer Correct Answer: C) 8x$^{21}$. 36. Simplify:$8\left(x^4\right)^{\frac{1}{2}}$ A) $4x^4$. B) $8x^2$. C) $4x^2$. D) $8x^4$. Show Answer Correct Answer: B) $8x^2$. 37. (x$^{3}$)$^{}$(x$^{2}$) A) X$^{-5}$. B) X$^{-6}$. C) X$^{5}$. D) X$^{6}$. Show Answer Correct Answer: C) X$^{5}$. 38. Which digit is in the tenths place in the number 8, 374, 625.1? A) 6. B) 2. C) 5. D) 1. Show Answer Correct Answer: D) 1. 39. Simplify:3$^{5}$ x 3$^{7}$ =? 3$^{2}$ A) 3$^{21}$. B) 3$^{10}$. C) 3$^{14}$. D) 3$^{-4}$. Show Answer Correct Answer: B) 3$^{10}$. 40. Write $a\times a\times a\times c\times c\times c\times c\times d\times d$ A) $a^3\times c^3\times d^3$. B) $a^4\times c^3\times d^2$. C) $a^3\times c^2\times d^3$. D) $a^3\times c^4\times d^2$. Show Answer Correct Answer: D) $a^3\times c^4\times d^2$. 41. Before learning to multiply and divide by Powers of 10, what concept do we need to review? A) Division. B) Addition. C) Place Value. D) Subtraction. Show Answer Correct Answer: C) Place Value. 42. A cylinder of curved surface area 1152 sq m is formed from a rectangular metallic sheet. Find the dimensions of the rectangular sheet if its length is double of its breadth. A) B = 11 m, l = 22 m. B) B = 8 m, l = 16 m. C) B = 10 m, l = 20 m. D) B = 24 m, l = 48 m. Show Answer Correct Answer: D) B = 24 m, l = 48 m. 43. 5$^{4}$/5$^{2}$ is equal to: A) 5$^{-6}$. B) 5$^{-2}$. C) 5$^{6}$. D) 5$^{2}$. Show Answer Correct Answer: D) 5$^{2}$. 44. How do you know if a number is divisible by 6? A) It is an even number. B) It ends in 6. C) The sum of the digits is 6. D) It is divisible by 2 and 3. Show Answer Correct Answer: D) It is divisible by 2 and 3. 45. Which expression is equivalent to 9$^{5}$? A) 9 x 9 x 9 x 9 x 9. B) 9 x 5. C) 9 x 9 x 9 x 9 x 9 x 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5. D) 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5. Show Answer Correct Answer: A) 9 x 9 x 9 x 9 x 9. 46. (2a$^{2}$b$^{4}$z)(6a$^{3}$b$^{2}$z$^{5}$) A) 8a$^{6}$b$^{8}$z$^{5}$. B) 12a$^{5}$b$^{6}$z$^{6}$. C) 12a$^{6}$b$^{8}$z$^{5}$. D) 8a$^{5}$b$^{6}$z$^{6}$. Show Answer Correct Answer: B) 12a$^{5}$b$^{6}$z$^{6}$. 47. ) Simplify(16x$^{4}$y$^{-5}$)/(8a$^{3}$b$^{-8}$) A) (2x$^{4}$b$^{8}$)/(a$^{3}$y$^{5}$). B) (8x$^{4}$b$^{8}$)/(a$^{3}$y$^{5}$). C) 2x$^{4}$b$^{8}$a$^{3}$y$^{5}$. D) (a$^{3}$y$^{5}$)/(2x$^{4}$b$^{8}$). Show Answer Correct Answer: A) (2x$^{4}$b$^{8}$)/(a$^{3}$y$^{5}$). 48. Simplify the expression:$\frac{3^4}{3^2}$ A) $3^4$. B) $3^3$. C) $3^2$. D) $3^1$. Show Answer Correct Answer: C) $3^2$. 49. Simplify 7$^{-2}$ A) 1/14. B) 1/7$^{2 }$= 1/49. C) -14. D) -49. Show Answer Correct Answer: B) 1/7$^{2 }$= 1/49. 50. 6 raise to 5 and 9 raise to 5 A) 15 raise to 5. B) 13 raise to 5. C) 14 raise 5. D) 16 raise to 5. Show Answer Correct Answer: A) 15 raise to 5. 51. 10$^{0 }$ is which? A) 1. B) 10. C) 0. D) 100. Show Answer Correct Answer: A) 1. 52. The value of (3$^{4}$)$^{3}$ is: A) 3. B) 3$^{12}$. C) 3$^{7}$. D) None of the above. Show Answer Correct Answer: B) 3$^{12}$. 53. Isaac takes 5 minutes to ride his bike down the hill to school and 10 minutes to ride up the hill from school. He attends school Monday through Friday. How many minutes does he spend biking to and from school in two weeks? A) 300 minutes. B) 200 minutes. C) 150 minutes. D) 100 minutes. Show Answer Correct Answer: B) 200 minutes. 54. What is the exponent form? A) $10^3$. B) $10^4$. C) $10^5$. D) None of the above. Show Answer Correct Answer: B) $10^4$. 55. Simplify (6p$^{2}$q$^{3}$)$^{2}$ A) 36p$^{4}$q$^{6}$. B) 36p$^{4}$q$^{5}$. C) 12p$^{4}$q$^{6}$. D) 12p$^{4}$q$^{5}$. Show Answer Correct Answer: A) 36p$^{4}$q$^{6}$. 56. Evaluate:6$^{2}$ A) 6 x 6. B) 12. C) 36. D) 49. Show Answer Correct Answer: C) 36. 57. Simplify $\frac{-30a^7b^3}{-5a^2b^2}$ A) $6a^5b$. B) $-6a^5b$. C) $25a^5b$. D) None of the above. Show Answer Correct Answer: A) $6a^5b$. 58. Ms. Wheeler's son has 10$^{2}$ pairs of socks. Ms. Wheeler is obsessed with buying her son clothes so she buys him 10$^{3 }$more pairs. How many total pairs does Legend have? A) $ 1100. B) $ 100. C) $ 11, 000. D) $ 11. Show Answer Correct Answer: A) $ 1100. 59. The exponent is equal to the ..... in the product. A) The answer. B) Number of numbers. C) Number of letters. D) Number of zeros. Show Answer Correct Answer: D) Number of zeros. 60. BE CAREFUL!Simplify $\left(x^4\right)^4$ A) $x^8$. B) $x^{16}$. C) All the above. D) None of the above. Show Answer Correct Answer: B) $x^{16}$. ← PreviousNext →Related QuizzesMathematics QuizzesClass 8 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 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 7 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books