This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Mathematics > Exponents And Powers > 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 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Find the value.6 x 10$^{2}$ A) 120. B) 60. C) 600. D) 12. Show Answer Correct Answer: C) 600. 2. Find the value.4 x 10$^{3}$ A) 40. B) 400. C) 120. D) 4, 000. Show Answer Correct Answer: D) 4, 000. 3. (-1)$^{50}$ is equal to A) 50. B) -50. C) -1. D) 1. Show Answer Correct Answer: D) 1. 4. $\left(-1\right)^{50}$ A) 1. B) (-1). C) -50. D) 50. Show Answer Correct Answer: A) 1. 5. (2$^{-1}$ + 3$^{-1}$ + 5$^{-1}$)$^{0}$ is equal to A) 1. B) 3. C) 0. D) 31/30. Show Answer Correct Answer: A) 1. 6. 2n$^{4}$ * 6$^{}$n$^{4}$ A) 8n$^{4}$. B) 12n$^{8}$. C) 8n$^{16}$. D) None of the above. Show Answer Correct Answer: B) 12n$^{8}$. 7. What is the value of $\left(3^0-4^0\right)\\times5^2$ A) -25. B) 1. C) 0. D) 25. Show Answer Correct Answer: C) 0. 8. What is the value of 'ten thousandths' in the place value chart? A) 0.001. B) 0.01. C) 0.0001. D) 0.1. Show Answer Correct Answer: C) 0.0001. 9. Simplify and express in the exponential form:$\left(\frac{a^5}{a^3}\right)\times a^8$ A) $a^{10}$. B) $a^3$. C) $a^{12}$. D) $a^5$. Show Answer Correct Answer: A) $a^{10}$. 10. When dividing powers with the same base ..... A) You stare into space hoping for a flyby alien to tell you the answer. B) Divide the bases and subtract the exponent. C) You chant your mantra "OOOH Please save me from this nightmare (repeat). D) Keep the base, subtract the exponents. Show Answer Correct Answer: D) Keep the base, subtract the exponents. 11. What is the value of $\left[\left(\frac{1}{2}\right)^4-\left(\frac{1}{4}\right)^3\right]\times2^6$ A) 16. B) A. 3. C) $\frac{1}{3}$. D) 64. Show Answer Correct Answer: B) A. 3. 12. $\left(4hj\right)^0$ A) $1$. B) $4h^1j^1$. C) $4$. D) $0$. Show Answer Correct Answer: A) $1$. 13. Simplify the expression:$(2^3)^2$ A) $2^9$. B) $2^5$. C) $2^6$. D) $2^8$. Show Answer Correct Answer: D) $2^8$. 14. What is the power of a number? A) The power of a number is the result of raising the base to an exponent. B) The power of a number is the sum of its digits. C) The power of a number is the product of its factors. D) The power of a number is the difference between its highest and lowest digits. Show Answer Correct Answer: A) The power of a number is the result of raising the base to an exponent. 15. All negative numbers raised to the power 4 is always ..... A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive. 16. $\left(3t^4\right)^3$ A) $3t^{12}$. B) $27t^{-12}$. C) $3^3t^{12}$. D) $27t^{12}$. Show Answer Correct Answer: D) $27t^{12}$. 17. Find the value10$^{0}$ A) 1. B) 10. C) 0. D) None of the above. Show Answer Correct Answer: A) 1. 18. Simplify the expression $x^5\cdot x^7$ A) X$^{-2}$. B) X$^{12}$. C) X$^{35}$. D) X$^{2}$. Show Answer Correct Answer: B) X$^{12}$. 19. Which of the following expressions is equivalent to 86, 000 A) 8.6 x 10$^{2}$. B) 860 x 10. C) 8, 600 x 10$^{2}$. D) 86 x 10$^{3}$. Show Answer Correct Answer: D) 86 x 10$^{3}$. 20. Change 5/8 into a decimal. A) 5.8. B) 1.6. C) .58. D) .625. Show Answer Correct Answer: D) .625. 21. What is 1000 written in exponential form? A) 10$^{4}$. B) 10$^{3}$. C) 1000 is already in exponential form. D) 10$^{2}$. Show Answer Correct Answer: B) 10$^{3}$. 22. Explain how to divide exponents with the same base without expanding. A) Add the exponents. B) Divide the exponents. C) Subtract the exponents. D) Multiply the exponents. Show Answer Correct Answer: C) Subtract the exponents. 23. How would you express the exponent expression below in expanded form? $-2^5$ A) (-2) (-2) (-2) (-2) (-2). B) (-) (2) (2) (2) (2) (2). C) (2)-(2)-(2)-(2). D) None of the above. Show Answer Correct Answer: B) (-) (2) (2) (2) (2) (2). 24. Which expression is greater:5$^{3}$ or 5x3? A) They are equal. B) The answer cannot be determined. C) 5 x 3. D) 5$^{3}$. Show Answer Correct Answer: D) 5$^{3}$. 25. EVALUATE \{ [2/3]$^{-2}$\}$^{2}$ A) 9/4. B) 81/16. C) 5/98. D) NONE OF THESE. Show Answer Correct Answer: B) 81/16. 26. 13$^{4}$/13$^{2}$ is equal to ..... A) 13$^{6}$. B) 1/13$^{6}$. C) 1/13$^{2}$. D) 13$^{2}$. Show Answer Correct Answer: D) 13$^{2}$. 27. A post is put every 6 feet along a fence around a rectangular field that is 42 ft long and 36 ft wide. How many posts are needed? A) 12. B) 10. C) 26. D) 20. Show Answer Correct Answer: C) 26. 28. $\left(2^{-1}+3^{-1}+5_{ }\right)^0$ A) 0. B) 5. C) $\frac{35}{30}$. D) 1. Show Answer Correct Answer: D) 1. 29. $\frac{18c^2}{-3c^3}$ A) $\frac{18}{-3c}$. B) $\frac{-6}{c}$. C) $\frac{6}{c}$. D) $-6c^{ }$. Show Answer Correct Answer: B) $\frac{-6}{c}$. 30. What expression is equivalent to $10^{20}\cdot10^2$ A) $10^{40}$. B) 2020. C) 40, 000. D) $10^{22}$. Show Answer Correct Answer: D) $10^{22}$. 31. Squares of whole numbers are called A) Exponents. B) Bases. C) Perfect squares. D) None of the above. Show Answer Correct Answer: C) Perfect squares. 32. (3z / 4z$^{3}$)$^{3}$ A) 27z$^{6}$ / 64. B) 27z / 64z$^{9}$. C) 27 / 64z$^{6}$. D) 27z$^{3}$ / 64z$^{6}$. Show Answer Correct Answer: C) 27 / 64z$^{6}$. 33. Simplify the expression:$7^2 \div 7^1$ A) $7^1$. B) $7^0$. C) $7^2$. D) $7^3$. Show Answer Correct Answer: A) $7^1$. 34. $x^{5+n}\left(x^2\right)^{3n+1}\div x^{7n-2}$ A) 1. B) $x^{-9}$. C) $x^9$. D) $x^7$. Show Answer Correct Answer: C) $x^9$. 35. What is 5$^{3 }$in standard form? A) 5x5x5. B) 125. C) 3x3x3x3x3. D) 243. Show Answer Correct Answer: B) 125. 36. Simplify-(2)$^{4}$ A) 8. B) 16. C) -16. D) -8. Show Answer Correct Answer: C) -16. 37. What is the reciprocal of (-3 / 4)$^{0}$ ..... A) 1. B) (3 / 4). C) -1. D) (-3 / 4). Show Answer Correct Answer: A) 1. 38. What is the base of the expression 11$^{12}$? A) 3. B) 12. C) 11. D) 21. Show Answer Correct Answer: C) 11. 39. What is the pattern between the number of zeros in a product and the exponent when multiplying by 10? A) The number of zeros is always one less than the exponent. B) The number of zeros is always three more than the exponent. C) The number of zeros is the same as the exponent. D) The number of zeros is always double the exponent. Show Answer Correct Answer: C) The number of zeros is the same as the exponent. 40. Select the correct answer.10$^{-2 }$is the same as: A) -1/10$^{2 }$and 0.02. B) -1/10$^{2 }$and-0.02. C) 1/10$^{2 }$and-0.01. D) 1/10$^{2 }$and 0.01. Show Answer Correct Answer: D) 1/10$^{2 }$and 0.01. 41. When raising powers to another power you must keep the base the same and ..... A) Divide the exponents. B) Subtract the exponents. C) Multiply the exponents. D) Add the exponents. Show Answer Correct Answer: C) Multiply the exponents. 42. $\left[\frac{1}{4}\right]^{-2}$ A) 8. B) -16. C) -8. D) 16. Show Answer Correct Answer: D) 16. 43. How many times bigger is $2^{43}$ $2^{40}$ A) 6. B) 3. C) 8. D) 83. Show Answer Correct Answer: C) 8. 44. 1 micron is equals to ..... A) 10$^{-6}$ m. B) 10$^{6}$ m. C) 1/10000 m. D) 10$^{-5}$ m. Show Answer Correct Answer: A) 10$^{-6}$ m. 45. Simplify (-7y$^{2}$)$^{}$(5y$^{4}$) A) -2y$^{8}$. B) -2y$^{6}$. C) -35y$^{6}$. D) -35y$^{8}$. Show Answer Correct Answer: C) -35y$^{6}$. 46. What is the result of multiplying 279 by 100, 000? A) 2, 790, 000, 000. B) 2, 790, 000. C) 279, 000. D) 27, 900, 000. Show Answer Correct Answer: D) 27, 900, 000. 47. Write $\left(\frac{2}{5}\right)^4$ A) $\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)$. B) $\left(\frac{2}{3}\right)\left(\frac{2}{5}\right)\left(\frac{2}{3}\right)\left(\frac{2}{5}\right)$. C) $\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)$. D) $\left(\frac{2}{5}\right)\left(\frac{3}{5}\right)\left(\frac{2}{5}\right)\left(\frac{3}{5}\right)$. Show Answer Correct Answer: C) $\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)$. 48. Simplify and write in the exponential form:$\left(-5\right)^4\times\left(-5\right)^7\times\left(-5\right)^3$ A) $\left(-5\right)^{12}$. B) $\left(-5\right)^{14}$. C) $\left(-5\right)^{15}$. D) None of the above. Show Answer Correct Answer: B) $\left(-5\right)^{14}$. 49. Simplify the expression:$3^2 \times 3^3$ A) $3^5$. B) $3^6$. C) $3^{15}$. D) $3^8$. Show Answer Correct Answer: A) $3^5$. 50. A scientist started with a culture of 20 bacteria in a dish. The number of bacteria at the end of each successive hour increased exponentially, so that the number at the end of one day was 220. How many bacteria were there after only 10 hours? A) 20(1-.105)$^{10}$. B) 20(1+.105)$^{10}$. C) 20(1+.42)$^{10}$. D) 20(1-.42)$^{10}$. Show Answer Correct Answer: B) 20(1+.105)$^{10}$. 51. Simplify:$\left(-5\right)^3\times\left(-3\right)^2$ A) -1125. B) 1125. C) -625. D) 125. Show Answer Correct Answer: A) -1125. 52. Find the value of the variable $128=2^m$ A) $64$. B) $-7$. C) $32$. D) $7$. Show Answer Correct Answer: D) $7$. 53. Find the missing exponent:$3^{16}=3^8\cdot3^?$ A) 2. B) 4. C) 1. D) 8. Show Answer Correct Answer: D) 8. 54. Write the following as a negative exponent.1/10 x 1/10 x 1/10 x 1/10 A) 10$^{-4}$. B) 10$^{4}$. C) 1/10$^{-4}$. D) 1/10, 000. Show Answer Correct Answer: A) 10$^{-4}$. 55. Simplify:$3^4\\times10^3$ A) 8100. B) 810000. C) 81000. D) None of the above. Show Answer Correct Answer: C) 81000. 56. Rewrite the radical expression using a rational exponent A) $\left(\frac{8}{5}\right)^6$. B) $8^{\frac{6}{5}}$. C) $\frac{1}{8^{\frac{5}{6}}}$. D) $8^{\frac{5}{6}}$. Show Answer Correct Answer: B) $8^{\frac{6}{5}}$. 57. What is the value of the expression below? $3^4$ A) 7. B) 12. C) 64. D) 81. Show Answer Correct Answer: D) 81. 58. What number is 10 times as much as 700? A) 7. B) 70. C) 7, 000. D) 70, 000. Show Answer Correct Answer: C) 7, 000. 59. Which does NOT equal $10^3$ A) 10, 000. B) 10 x 10 x 10. C) 1, 000. D) Ten cubed. Show Answer Correct Answer: A) 10, 000. 60. (1/2)$^{-4}$ is equal to A) 1/16. B) 16. C) 2. D) 1/2. Show Answer Correct Answer: B) 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 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 7 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books