This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Simplify the expression:$7^2 \div 7^1$ A) $7^0$. B) $7^1$. C) $7^2$. D) $7^3$. Show Answer Correct Answer: B) $7^1$. 2. $x^{5+n}\left(x^2\right)^{3n+1}\div x^{7n-2}$ A) $x^7$. B) $x^{-9}$. C) $x^9$. D) 1. Show Answer Correct Answer: C) $x^9$. 3. What is 5$^{3 }$in standard form? A) 5x5x5. B) 3x3x3x3x3. C) 125. D) 243. Show Answer Correct Answer: C) 125. 4. Simplify-(2)$^{4}$ A) 8. B) 16. C) -8. D) -16. Show Answer Correct Answer: D) -16. 5. What is the reciprocal of (-3 / 4)$^{0}$ ..... A) (-3 / 4). B) (3 / 4). C) -1. D) 1. Show Answer Correct Answer: D) 1. 6. What is the base of the expression 11$^{12}$? A) 3. B) 11. C) 12. D) 21. Show Answer Correct Answer: B) 11. 7. 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 the same as the exponent. C) The number of zeros is always double the exponent. D) The number of zeros is always three more than the exponent. Show Answer Correct Answer: B) The number of zeros is the same as the exponent. 8. 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. 9. When raising powers to another power you must keep the base the same and ..... A) Add the exponents. B) Subtract the exponents. C) Multiply the exponents. D) Divide the exponents. Show Answer Correct Answer: C) Multiply the exponents. 10. $\left[\frac{1}{4}\right]^{-2}$ A) 8. B) 16. C) -8. D) -16. Show Answer Correct Answer: B) 16. 11. How many times bigger is $2^{43}$ $2^{40}$ A) 3. B) 6. C) 8. D) 83. Show Answer Correct Answer: C) 8. 12. 1 micron is equals to ..... A) 1/10000 m. B) 10$^{6}$ m. C) 10$^{-6}$ m. D) 10$^{-5}$ m. Show Answer Correct Answer: C) 10$^{-6}$ m. 13. Will the following be positive or negative? $-5^2$ A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: B) Negative. 14. Express each of the following number using exponential notation:3125 A) $5^5$. B) $5^4$. C) $5^3$. D) $5^6$. Show Answer Correct Answer: A) $5^5$. 15. Simplify (-7y$^{2}$)$^{}$(5y$^{4}$) A) -35y$^{6}$. B) -2y$^{6}$. C) -35y$^{8}$. D) -2y$^{8}$. Show Answer Correct Answer: A) -35y$^{6}$. 16. 5x5x5x5 A) 5 raise to 7. B) 5 raise to 8. C) 5 raise to 6. D) 5 raise to 5. Show Answer Correct Answer: C) 5 raise to 6. 17. Which expressions are equivalent to 6$^{4}$? A) 6$^{24}$. B) 37 x 36. C) 24. D) 6$^{2 }$x 6$^{2}$. Show Answer Correct Answer: D) 6$^{2 }$x 6$^{2}$. 18. What is the result of multiplying 279 by 100, 000? A) 2, 790, 000. B) 27, 900, 000. C) 279, 000. D) 2, 790, 000, 000. Show Answer Correct Answer: B) 27, 900, 000. 19. Write $\left(\frac{2}{5}\right)^4$ A) $\left(\frac{2}{5}\right)\left(\frac{3}{5}\right)\left(\frac{2}{5}\right)\left(\frac{3}{5}\right)$. B) $\left(\frac{2}{3}\right)\left(\frac{2}{5}\right)\left(\frac{2}{3}\right)\left(\frac{2}{5}\right)$. C) $\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)\left(\frac{2}{3}\right)$. D) $\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)$. Show Answer Correct Answer: D) $\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)\left(\frac{2}{5}\right)$. 20. 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) $\left(-5\right)^{14}$. 21. Solve:3$^{4}$ A) 12. B) 9. C) 81. D) 28. Show Answer Correct Answer: C) 81. 22. Simplify the expression:$3^2 \times 3^3$ A) $3^5$. B) $3^6$. C) $3^8$. D) $3^{15}$. Show Answer Correct Answer: A) $3^5$. 23. 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)$^{10}$. 24. Simplify:$\left(-5\right)^3\times\left(-3\right)^2$ A) 1125. B) 125. C) -625. D) -1125. Show Answer Correct Answer: D) -1125. 25. $8^2\times8^6$ A) $8^4$. B) $8^8$. C) $8^6$. D) $8^1$. Show Answer Correct Answer: B) $8^8$. ← 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