This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Mathematics > Exponents And Powers > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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) $24x^4y^7$. 2. What is the power to this problem?6 x 6 x 6 x 6 x 6 x 6 x 6 A) 7 to the 9th power. B) 10 to the 5th power. C) 6 to the 8th power. D) 6 to the 7th power. Show Answer Correct Answer: D) 6 to the 7th power. 3. Find the equivalent expression.9 x 9 x 9 x 9 x 9 A) 9$^{5}$. B) 9$^{15}$. C) 9 x 5. D) 9 + 9 + 9 + 9+ 9. Show Answer Correct Answer: A) 9$^{5}$. 4. How would you write-5.6 x 10$^{-3}$ in standard form? A) 0.0056. B) -5, 600. C) -0.0056. D) 0.00056. Show Answer Correct Answer: C) -0.0056. 5. How many times bigger is $3^{20}$ $3^{18}$ A) 2. B) 9. C) 38. D) 6. Show Answer Correct Answer: B) 9. 6. Simplify this expression so that it contains only positive exponents. A) $\frac{x^8}{y^{-8}}$. B) $x^{20}y^8$. C) $x^8y^8$. D) $\frac{x^{10}y^8}{x^2}$. Show Answer Correct Answer: C) $x^8y^8$. 7. 3 years ago you had $ 120 in the bank. You now have $ 207.36. If the amount of money at the end of each year increases exponentially, then how much will you have in the bank after another 7 years? A) 120(1+.2)$^{10}$. B) All of the answers are correct. C) None of the answers are correct because the growth rate is 25% not 20%. D) 207.36(1+.2)$^{7}$. Show Answer Correct Answer: D) 207.36(1+.2)$^{7}$. 8. MULTIPLICATIVE INVERSE OF 81/9 IS ..... A) 9/1. B) 9/81. C) 1. D) 0. Show Answer Correct Answer: B) 9/81. 9. How can you express the product 9 x 9 x 9 as a power? A) 9$^{3}$. B) 9$^{2}$. C) 9$^{4}$. D) 3$^{9}$. Show Answer Correct Answer: A) 9$^{3}$. 10. What is the place value of the digit 7 in the number 8, 374, 625.1? A) Tens. B) Thousands. C) Hundreds. D) Ten Thousands. Show Answer Correct Answer: D) Ten Thousands. 11. Which of the following is correct scientific notation? A) 20.35 x 10$^{4}$. B) .2035 x 10$^{4}$. C) 2.035 x10$^{4}$. D) 2035$^{ 4}$. Show Answer Correct Answer: C) 2.035 x10$^{4}$. 12. Simplify:$3x^2\left(-5x^4\right)$ A) $15x^2$. B) $-15x^8$. C) $-2x^6$. D) None of the above. Show Answer Correct Answer: D) None of the above. 13. How many zeros are there in 100, 000? A) 4. B) 6. C) 3. D) 5. Show Answer Correct Answer: D) 5. 14. The expression $\frac{729\times64}{270}$ A) $3^{-3}\times2^5\times5^{-1}$. B) A. $3^3\times2^5\times5^{-1}$. C) $3^{-3}\times2^5\times5$. D) $3^6\times2^5\times5$. Show Answer Correct Answer: B) A. $3^3\times2^5\times5^{-1}$. 15. Simplify:3$^{0}$ + 5$^{0}$ x 6$^{0}$ A) 3. B) 2. C) 1. D) 90$^{0}$. Show Answer Correct Answer: B) 2. 16. If $\left(\frac{5}{9}\right)^4\times\left(\frac{5}{9}\right)^{-10}=\left(\frac{5}{9}\right)^{-4}\times\left(\frac{5}{9}\right)^{\left(2a-1\right)}$ A) $-\frac{3}{2}$. B) A. $-\frac{1}{2}$. C) $-\frac{11}{2}$. D) $\frac{1}{2}$. Show Answer Correct Answer: B) A. $-\frac{1}{2}$. 17. THE VALUE OF (3$^{2}$-2$^{2}$) * (2/3)$^{-3}$ IS: A) 8/135. B) 135/8. C) 8/45. D) 45/8. Show Answer Correct Answer: B) 135/8. 18. Find the Product. 6 x 10$^{2}$ A) 600. B) 60. C) 6. D) 6, 000. Show Answer Correct Answer: A) 600. 19. What is the place value of the digit 3 in the number 8, 374, 625.1? A) Tens. B) Thousands. C) Hundred Thousands. D) Ones. Show Answer Correct Answer: C) Hundred Thousands. 20. We have $(-11)^2\times(-11)^4=(11)^x.$ A) 0. B) -2. C) 4. D) 6. Show Answer Correct Answer: D) 6. 21. The quotient rule says that when you are dividing two exponents with the same base, you keep the base and ..... the exponents. A) Multiply. B) Divide. C) Subract. D) Add. Show Answer Correct Answer: C) Subract. 22. 10$^{3}$ looks like ..... A) 10 X 3. B) 3 X 3 X 3 X 3 X 3 X 3 X 3 X 3 X 3 X 3. C) 10 X 10 X 10. D) 100. Show Answer Correct Answer: C) 10 X 10 X 10. 23. Simplify the following expression:-9$^{0}$ A) -1. B) 0. C) 1. D) -9. Show Answer Correct Answer: A) -1. 24. The co-ordinate (-3, 4) lies in ..... quadrant A) III. B) I. C) II. D) IV. Show Answer Correct Answer: C) II. 25. What is the value of $\left(400\times3^0-8\times50\right)$ A) 392. B) 800. C) 1192. D) A. 0. Show Answer Correct Answer: D) A. 0. 26. (-1)$^{2001}$X(-9)$^{2}$ = ..... A) 81. B) -81. C) 18009. D) None of the above. Show Answer Correct Answer: B) -81. 27. Express the number appearing in the following statement in standard form: "60, 230, 000, 000, 000, 000, 000, 000 molecules are contained in a drop of water weighing 1.8 gm. A) $6.023\times10^5$. B) $6023\times10^{19}$. C) $6.023\times10^{22}$. D) None of the above. Show Answer Correct Answer: C) $6.023\times10^{22}$. 28. A$^{m}$ x a$^{m}$ is equal to ..... A) A$^{m+m}$. B) A$^{mm}$. C) A$^{m-m}$. D) A$^{m}$/a$^{m}$. Show Answer Correct Answer: A) A$^{m+m}$. 29. Which number has a 9 with a value that is 10 times more than the value of the 9 in the number 129 A) 190. B) 900. C) 139Tags4.2.A. D) None of the above. Show Answer Correct Answer: A) 190. 30. What is the power of a power rule in exponents? A) When raising a power to another power, you divide the exponents:(a$^{m}$)$^{n}$ = a$^{m/n}$. B) When raising a power to another power, you add the exponents:(a$^{m}$)$^{n}$ = a$^{m+n}$. C) When raising a power to another power, you multiply the exponents:(a$^{m}$)$^{n}$ = a$^{m*n}$. D) When raising a power to another power, you subtract the exponents:(a$^{m}$)$^{n}$ = a$^{m-n}$. Show Answer Correct Answer: C) When raising a power to another power, you multiply the exponents:(a$^{m}$)$^{n}$ = a$^{m*n}$. 31. Simplify $4x^2\left(-2x^3y^5\right)$ A) $-8x^6y^5$. B) $8x^5y^5$. C) $-8x^5y^5$. D) None of the above. Show Answer Correct Answer: C) $-8x^5y^5$. 32. Which product of 10, equals 10, 000? A) 10x10x10x10x10. B) 10x10. C) 10x10x10. D) 10x10x10x10. Show Answer Correct Answer: D) 10x10x10x10. 33. How would you write 4.3756 x 10$^{4 }$in standard form? A) 0.00043756. B) 4, 3756. C) 437, 560, 000. D) 43, 756. Show Answer Correct Answer: D) 43, 756. 34. What is the value of x$^{-y}$ when x=5 and y=2 A) -25. B) 1/25. C) 0.86. D) 25. Show Answer Correct Answer: B) 1/25. 35. The multiplicative inverse of 10$^{-2}$ is ..... A) 10 x 2. B) 1/10$^{2}$. C) 10$^{2}$. D) 1/10$^{-2}$. Show Answer Correct Answer: C) 10$^{2}$. 36. Which number listed below is a prime number? A) 63. B) 37. C) 1. D) 33. Show Answer Correct Answer: B) 37. 37. Will the following be positive or negative? $\left(-5\right)^2$ A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive. 38. 7 raise 6ans:7x7x7x7x7x7 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. Find the value.9 x 10$^{2}$ A) 180. B) 18. C) 900. D) 90. Show Answer Correct Answer: C) 900. 40. Which of the following is the area of a rhombus? A) 1/2 (sum of its diagonals). B) 2 (Product of its diagonals). C) Product of its diagonals. D) 1/2 (Product of its diagonals). Show Answer Correct Answer: D) 1/2 (Product of its diagonals). 41. Y$^{-2}$ x y$^{-5 }$is equal to ..... A) Y$^{-3}$. B) Y$^{-5}$. C) Y$^{-7}$. D) Y$^{-10}$. Show Answer Correct Answer: C) Y$^{-7}$. 42. $10\times10\times10\times10\times10=$ A) $10\times5$. B) $10^5$. C) All the above. D) None of the above. Show Answer Correct Answer: B) $10^5$. 43. On Simplifying $\frac{\left(9m^2\right)^{\frac{1}{3}}}{6^4}\times\frac{\left(4n^2\right)^{\frac{1}{3}}}{5m}$ A) $\left(\frac{1}{5}\right)\left(\frac{n^{\frac{2}{\frac{3}{3}}}}{3^{10}2^{10}m^{\frac{1}{3}}}\right)^{ }$. B) $\frac{1}{5}\left(\frac{n^2\times2^6}{3^{10}m^{\frac{1}{3}}}\right)$. C) $\left(\frac{3^62^6n^2}{5m}\right)^{\frac{1}{3}}$. D) None of these. Show Answer Correct Answer: A) $\left(\frac{1}{5}\right)\left(\frac{n^{\frac{2}{\frac{3}{3}}}}{3^{10}2^{10}m^{\frac{1}{3}}}\right)^{ }$. 44. $p\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q$ A) 9pq. B) $pq^9$. C) $\left(pq\right)^9$. D) $\left(pq\right)^{10}$. Show Answer Correct Answer: B) $pq^9$. 45. Simplify and solve:3$^{3}$-2$^{3 }$= A) 19. B) 20. C) 27-8. D) 35. Show Answer Correct Answer: A) 19. 46. Write in expanded form:7 raise to 9 A) 9x7x9x9x7x9. B) 9x9x9x9. C) 7x7x7x7x7x7x7x7x7x7x7. D) 7x7x7x7x7x7x7x7x7. Show Answer Correct Answer: D) 7x7x7x7x7x7x7x7x7. 47. According to exponent rules, when we raise the power to a power we ..... the exponents.Example:(d$^{2}$)$^{5}$ A) Add. B) Multiply. C) Divide. D) Subtract. Show Answer Correct Answer: B) Multiply. 48. An example of a perfect square is A) 2. B) 16. C) 30. D) None of the above. Show Answer Correct Answer: B) 16. 49. Ten squared is the same as A) $10^0$. B) $10^3$. C) $10^2$. D) $10^1$. Show Answer Correct Answer: C) $10^2$. 50. Simplify:(6$^{5}$)$^{3}$ A) 6$^{10}$. B) 6$^{8}$. C) 6$^{2}$. D) 6$^{15}$. Show Answer Correct Answer: D) 6$^{15}$. 51. The exponential form of 625 is: A) 5$^{4}$. B) 5$^{5}$. C) 5$^{3}$. D) 6$^{2}$. Show Answer Correct Answer: A) 5$^{4}$. 52. What is the value of 10$^{0}$? A) 1. B) 0. C) 100. D) 10. Show Answer Correct Answer: A) 1. 53. Which is the correct definition of like terms? A) A number that stays fixed in an expression,. B) To make an expression or equation smaller by combining like terms. C) Terms that have the same variables and powers(exponents). D) A number multiplied by a variable. Show Answer Correct Answer: C) Terms that have the same variables and powers(exponents). 54. What is the value of $2^4 + 2^3$ A) 20. B) 18. C) 16. D) 24. Show Answer Correct Answer: A) 20. 55. Express the following in exponential form:a x a x a x a x b x b x b x c x c x c x c A) $a^3b^3c^3$. B) $a^3b^4c^3$. C) $a^4b^3c^4$. D) None of the above. Show Answer Correct Answer: C) $a^4b^3c^4$. 56. 5 x 10$^{6 }$written in standard form is A) 5, 000, 000. B) 50, 000, 000. C) 500, 000. D) 5 x 10$^{6 }$is already in standard form. Show Answer Correct Answer: A) 5, 000, 000. 57. (9 x 10$^{4}$ ) + (8 x 10$^{2}$ ) + (5 x 10$^{1}$) + (7 x 10$^{0}$ ) A) 98, 057. B) 98, 570. C) 90, 857. D) 9, 857. Show Answer Correct Answer: C) 90, 857. 58. What expression is equivalent to $10^{27}\cdot10^5$ A) 2021. B) $10^{135}$. C) 2020. D) $10^{32}$. Show Answer Correct Answer: D) $10^{32}$. 59. Simplify $2^4\cdot2^5$ A) 4$^{20}$. B) 2$^{9}$. C) 4$^{9}$. D) 2$^{20}$. Show Answer Correct Answer: B) 2$^{9}$. 60. Volume of a cube is 125 cu cm. Find its total surface area. A) 100 sq cm. B) 25 sq cm. C) 150 sq cm. D) 150 sq cm. Show Answer Correct Answer: C) 150 sq cm. ← 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 6Class 8 Maths Chapter 12 Exponents And Powers Quiz 7 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books