This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 12 Exponents And Powers – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Maths Chapter 12 Exponents And Powers Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Find the value of the variable $128=2^m$ A) $64$. B) $-7$. C) $7$. D) $32$. Show Answer Correct Answer: C) $7$. 2. Find the missing exponent:$3^{16}=3^8\cdot3^?$ A) 2. B) 8. C) 4. D) 1. Show Answer Correct Answer: B) 8. 3. 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$^{-4}$. 4. Simplify:$3^4\\times10^3$ A) 8100. B) 810000. C) 81000. D) None of the above. Show Answer Correct Answer: C) 81000. 5. Rewrite the radical expression using a rational exponent A) $\left(\frac{8}{5}\right)^6$. B) $\frac{1}{8^{\frac{5}{6}}}$. C) $8^{\frac{6}{5}}$. D) $8^{\frac{5}{6}}$. Show Answer Correct Answer: C) $8^{\frac{6}{5}}$. 6. What is the value of the expression below? $3^4$ A) 7. B) 12. C) 64. D) 81. Show Answer Correct Answer: D) 81. 7. What number is 10 times as much as 700? A) 7. B) 7, 000. C) 70. D) 70, 000. Show Answer Correct Answer: B) 7, 000. 8. Which does NOT equal $10^3$ A) 10 x 10 x 10. B) 10, 000. C) Ten cubed. D) 1, 000. Show Answer Correct Answer: B) 10, 000. 9. (1/2)$^{-4}$ is equal to A) 2. B) 1/16. C) 16. D) 1/2. Show Answer Correct Answer: C) 16. 10. What is the value of a digit depending on its place or position in a number called? A) Place Value. B) Digit Value. C) Number Value. D) Position Value. Show Answer Correct Answer: A) Place Value. 11. How would you express the exponent expression below in expanded form? $6^4$ A) (6) (4). B) (6) (6) (6) (6). C) (6) + (6) + (6) + (6). D) None of the above. Show Answer Correct Answer: B) (6) (6) (6) (6). 12. Terms whose variables (and their exponents such as the 2 in x$^{2}$) are the same. A) Expression. B) Variable. C) Like terms. D) Evaluate. Show Answer Correct Answer: C) Like terms. 13. $\left(-\frac{4}{7}\right)^6$ A) 6. B) $\frac{4}{6}$. C) $\frac{-4}{6}$. D) None of the above. Show Answer Correct Answer: C) $\frac{-4}{6}$. 14. $\left(2d^2e^3\right)^5$ A) $32d^2e^3$. B) $32d^{10}e^{15}$. C) $10d^{10}e^{15}$. D) $2d^{10}e^{15}$. Show Answer Correct Answer: B) $32d^{10}e^{15}$. 15. When multiplying powers with the same base ..... A) Multiply the bases and subtract the exponents. B) Keep the base, add the exponents. C) Raise your hand and ask the teacher to solve it for you. D) Give up and run away. Show Answer Correct Answer: B) Keep the base, add the exponents. 16. Which expression is equivalent to-4 x 4 x 4 x 4 x 4 x 4 x 4 x 4? A) -4$^{8}$. B) -8$^{4}$. C) (-8)$^{4}$. D) (-4)$^{8}$. Show Answer Correct Answer: A) -4$^{8}$. 17. What does the exponent tell you in a number written with exponents? A) The number of zeros in the number. B) How many times the base number is used as a factor. C) The value of the base number. D) The total sum of the digits. Show Answer Correct Answer: B) How many times the base number is used as a factor. 18. Ms. Wheeler owes Aja'h $ 1000. What should this number look like in exponent form? A) 10$^{1}$. B) 10$^{18}$. C) 10$^{3}$. D) 10$^{6}$. Show Answer Correct Answer: C) 10$^{3}$. 19. Which expression is equivalent to 6$^{3}$? A) 6 x 3. B) 6 x 6 x 6. C) 6 x 6 x 6 x 6. D) 3 x 3 x 3 x 3 x 3 x 3. Show Answer Correct Answer: B) 6 x 6 x 6. 20. (7uv$^{2}$)$^{-5}$ A) -35uv$^{-10}$. B) -5/7uv$^{2}$. C) 1/7$^{5}$u$^{5}$v$^{10}$. D) 1/7uv$^{10}$. Show Answer Correct Answer: C) 1/7$^{5}$u$^{5}$v$^{10}$. 21. What is the first step in PEMDAS? A) Paragraph. B) Parentheses. C) Pages. D) People. Show Answer Correct Answer: B) Parentheses. 22. Simplify:10$^{19}$ x 10$^{10}$ A) 10$^{9}$. B) 10$^{190}$. C) 10$^{29}$. D) 10. Show Answer Correct Answer: C) 10$^{29}$. 23. Simplify and write in exponential form:$20^{100}\div20^9$ A) $20^{109}$. B) $20^{81}$. C) $20^{99}$. D) $20^{91}$. Show Answer Correct Answer: D) $20^{91}$. 24. Simplify this expression so that it contains only positive exponents. $\frac{3^{-1}\cdot y^{-3}}{x^{-3}}$ A) $3x^3y^3$. B) $\frac{y^3}{3x^3}$. C) $\frac{x^3}{3y^3}$. D) $\frac{1}{3x^3y^3}$. Show Answer Correct Answer: C) $\frac{x^3}{3y^3}$. 25. Use a calculator to evaluate the power. $20^4$ A) 160000. B) 5. C) 80. D) 3200000. Show Answer Correct Answer: A) 160000. ← 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