This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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$^{5}$. 2. How would you write-5.6 x 10$^{-3}$ in standard form? A) 0.0056. B) -5, 600. C) 0.00056. D) -0.0056. Show Answer Correct Answer: D) -0.0056. 3. How many times bigger is $3^{20}$ $3^{18}$ A) 2. B) 6. C) 9. D) 38. Show Answer Correct Answer: C) 9. 4. 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) $x^8y^8$. 5. 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)$^{7}$. 6. MULTIPLICATIVE INVERSE OF 81/9 IS ..... A) 0. B) 1. C) 9/81. D) 9/1. Show Answer Correct Answer: C) 9/81. 7. How can you express the product 9 x 9 x 9 as a power? A) 9$^{2}$. B) 9$^{3}$. C) 9$^{4}$. D) 3$^{9}$. Show Answer Correct Answer: B) 9$^{3}$. 8. 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. 9. Which of the following is correct scientific notation? A) 20.35 x 10$^{4}$. B) .2035 x 10$^{4}$. C) 2035$^{ 4}$. D) 2.035 x10$^{4}$. Show Answer Correct Answer: D) 2.035 x10$^{4}$. 10. 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. 11. How many zeros are there in 100, 000? A) 4. B) 5. C) 6. D) 3. Show Answer Correct Answer: B) 5. 12. The expression $\frac{729\times64}{270}$ A) A. $3^3\times2^5\times5^{-1}$. B) $3^{-3}\times2^5\times5$. C) $3^6\times2^5\times5$. D) $3^{-3}\times2^5\times5^{-1}$. Show Answer Correct Answer: A) A. $3^3\times2^5\times5^{-1}$. 13. Simplify:3$^{0}$ + 5$^{0}$ x 6$^{0}$ A) 3. B) 2. C) 1. D) 90$^{0}$. Show Answer Correct Answer: B) 2. 14. Which is equivalent to 7 x 7 x 7 x 7 x 7 x 7? A) 7$^{5}$. B) 7$^{6}$. C) 6$^{7}$. D) 7$^{7}$. Show Answer Correct Answer: B) 7$^{6}$. 15. 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) A. $-\frac{1}{2}$. B) $-\frac{11}{2}$. C) $\frac{1}{2}$. D) $-\frac{3}{2}$. Show Answer Correct Answer: A) A. $-\frac{1}{2}$. 16. 6b = 30 A) X = 36. B) X = 24. C) X = 180. D) X = 5. Show Answer Correct Answer: D) X = 5. 17. THE VALUE OF (3$^{2}$-2$^{2}$) * (2/3)$^{-3}$ IS: A) 45/8. B) 135/8. C) 8/45. D) 8/135. Show Answer Correct Answer: B) 135/8. 18. Find the Product. 6 x 10$^{2}$ A) 6. B) 60. C) 600. D) 6, 000. Show Answer Correct Answer: C) 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. 7 raise to 5 A) 7x7x7x7x7x7. B) 7x7x7x7. C) 7x7x7x7x7x7x7. D) 7x7x7x7x7. Show Answer Correct Answer: D) 7x7x7x7x7. 21. 10$^{5}$ = A) 100. B) 10, 000. C) 1, 000. D) 100, 000. Show Answer Correct Answer: D) 100, 000. 22. We have $(-11)^2\times(-11)^4=(11)^x.$ A) -2. B) 4. C) 6. D) 0. Show Answer Correct Answer: C) 6. 23. The quotient rule says that when you are dividing two exponents with the same base, you keep the base and ..... the exponents. A) Add. B) Subract. C) Multiply. D) Divide. Show Answer Correct Answer: B) Subract. 24. 10$^{3}$ looks like ..... A) 10 X 10 X 10. B) 10 X 3. C) 3 X 3 X 3 X 3 X 3 X 3 X 3 X 3 X 3 X 3. D) 100. Show Answer Correct Answer: A) 10 X 10 X 10. 25. Simplify the following expression:-9$^{0}$ A) -9. B) 0. C) -1. D) 1. Show Answer Correct Answer: C) -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 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